diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index d115b3dd..68ff60a5 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -55,6 +55,7 @@ set(IMPL_HEADERS
   ${SOURCES_DIR}/catch_template_test_macros.hpp
   ${SOURCES_DIR}/catch_test_case_info.hpp
   ${SOURCES_DIR}/catch_test_macros.hpp
+  ${SOURCES_DIR}/catch_test_run_info.hpp
   ${SOURCES_DIR}/catch_test_spec.hpp
   ${SOURCES_DIR}/catch_timer.hpp
   ${SOURCES_DIR}/catch_tostring.hpp
@@ -63,6 +64,7 @@ set(IMPL_HEADERS
   ${SOURCES_DIR}/catch_version.hpp
   ${SOURCES_DIR}/catch_version_macros.hpp
   ${SOURCES_DIR}/internal/catch_assertion_handler.hpp
+  ${SOURCES_DIR}/internal/catch_benchmark_stats_fwd.hpp
   ${SOURCES_DIR}/internal/catch_case_insensitive_comparisons.hpp
   ${SOURCES_DIR}/internal/catch_case_sensitive.hpp
   ${SOURCES_DIR}/internal/catch_clara.hpp
@@ -210,7 +212,6 @@ set(INTERNAL_FILES ${IMPL_SOURCES} ${IMPL_HEADERS})
 
 set(INTERFACE_HEADERS
   ${SOURCES_DIR}/interfaces/catch_interfaces_all.hpp
-  ${SOURCES_DIR}/interfaces/catch_interfaces_capture.hpp
   ${SOURCES_DIR}/interfaces/catch_interfaces_config.hpp
   ${SOURCES_DIR}/interfaces/catch_interfaces_exception.hpp
   ${SOURCES_DIR}/interfaces/catch_interfaces_generatortracker.hpp
@@ -219,7 +220,6 @@ set(INTERFACE_HEADERS
   ${SOURCES_DIR}/interfaces/catch_interfaces_testcase.hpp
 )
 set(INTERFACE_SOURCES
-  ${SOURCES_DIR}/interfaces/catch_interfaces_capture.cpp
   ${SOURCES_DIR}/interfaces/catch_interfaces_config.cpp
   ${SOURCES_DIR}/interfaces/catch_interfaces_exception.cpp
   ${SOURCES_DIR}/interfaces/catch_interfaces_generatortracker.cpp
diff --git a/src/catch2/benchmark/catch_benchmark.hpp b/src/catch2/benchmark/catch_benchmark.hpp
index 6683dc05..f7307466 100644
--- a/src/catch2/benchmark/catch_benchmark.hpp
+++ b/src/catch2/benchmark/catch_benchmark.hpp
@@ -11,9 +11,10 @@
 #define CATCH_BENCHMARK_HPP_INCLUDED
 
 #include <catch2/interfaces/catch_interfaces_config.hpp>
+#include <catch2/interfaces/catch_interfaces_reporter.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
 #include <catch2/internal/catch_context.hpp>
-#include <catch2/interfaces/catch_interfaces_reporter.hpp>
+#include <catch2/internal/catch_run_context.hpp>
 #include <catch2/internal/catch_registry_hub.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
diff --git a/src/catch2/benchmark/detail/catch_complete_invoke.hpp b/src/catch2/benchmark/detail/catch_complete_invoke.hpp
index d24da37d..6b6b13bf 100644
--- a/src/catch2/benchmark/detail/catch_complete_invoke.hpp
+++ b/src/catch2/benchmark/detail/catch_complete_invoke.hpp
@@ -12,7 +12,6 @@
 
 #include <catch2/internal/catch_test_failure_exception.hpp>
 #include <catch2/internal/catch_meta.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 
 #include <type_traits>
diff --git a/src/catch2/catch_all.hpp b/src/catch2/catch_all.hpp
index d0fd8c6d..3dfd2eb6 100644
--- a/src/catch2/catch_all.hpp
+++ b/src/catch2/catch_all.hpp
@@ -36,6 +36,7 @@
 #include <catch2/catch_template_test_macros.hpp>
 #include <catch2/catch_test_case_info.hpp>
 #include <catch2/catch_test_macros.hpp>
+#include <catch2/catch_test_run_info.hpp>
 #include <catch2/catch_test_spec.hpp>
 #include <catch2/catch_timer.hpp>
 #include <catch2/catch_tostring.hpp>
@@ -46,6 +47,7 @@
 #include <catch2/generators/catch_generators_all.hpp>
 #include <catch2/interfaces/catch_interfaces_all.hpp>
 #include <catch2/internal/catch_assertion_handler.hpp>
+#include <catch2/internal/catch_benchmark_stats_fwd.hpp>
 #include <catch2/internal/catch_case_insensitive_comparisons.hpp>
 #include <catch2/internal/catch_case_sensitive.hpp>
 #include <catch2/internal/catch_clara.hpp>
diff --git a/src/catch2/catch_message.cpp b/src/catch2/catch_message.cpp
index d4723e94..8414b53f 100644
--- a/src/catch2/catch_message.cpp
+++ b/src/catch2/catch_message.cpp
@@ -6,10 +6,10 @@
 
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/catch_message.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
 #include <catch2/internal/catch_uncaught_exceptions.hpp>
 #include <catch2/internal/catch_enforce.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
+#include <catch2/internal/catch_run_context.hpp>
 
 #include <cassert>
 #include <stack>
diff --git a/src/catch2/catch_message.hpp b/src/catch2/catch_message.hpp
index e6bc1b5d..b421c724 100644
--- a/src/catch2/catch_message.hpp
+++ b/src/catch2/catch_message.hpp
@@ -12,7 +12,7 @@
 #include <catch2/internal/catch_reusable_string_stream.hpp>
 #include <catch2/internal/catch_stream_end_stop.hpp>
 #include <catch2/internal/catch_message_info.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
+#include <catch2/internal/catch_run_context.hpp>
 #include <catch2/catch_tostring.hpp>
 
 #include <string>
@@ -61,7 +61,7 @@ namespace Catch {
 
     class Capturer {
         std::vector<MessageInfo> m_messages;
-        IResultCapture& m_resultCapture = getResultCapture();
+        RunContext& m_resultCapture = getResultCapture();
         size_t m_captured = 0;
     public:
         Capturer( StringRef macroName, SourceLineInfo const& lineInfo, ResultWas::OfType resultType, StringRef names );
diff --git a/src/catch2/catch_session.cpp b/src/catch2/catch_session.cpp
index 681a82d9..84eeb33c 100644
--- a/src/catch2/catch_session.cpp
+++ b/src/catch2/catch_session.cpp
@@ -25,7 +25,8 @@
 #include <catch2/internal/catch_stdstreams.hpp>
 #include <catch2/internal/catch_istream.hpp>
 #include <catch2/internal/catch_test_case_registry_impl.hpp>
-
+#include <catch2/internal/catch_registry_hub.hpp>
+#include <catch2/catch_test_case_info.hpp>
 
 #include <algorithm>
 #include <cassert>
diff --git a/src/catch2/catch_test_run_info.hpp b/src/catch2/catch_test_run_info.hpp
new file mode 100644
index 00000000..5fca6879
--- /dev/null
+++ b/src/catch2/catch_test_run_info.hpp
@@ -0,0 +1,23 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+#ifndef CATCH_TEST_RUN_INFO_HPP_INCLUDED
+#define CATCH_TEST_RUN_INFO_HPP_INCLUDED
+
+#include <catch2/internal/catch_stringref.hpp>
+
+namespace Catch {
+
+    struct TestRunInfo {
+        constexpr TestRunInfo(StringRef _name) : name(_name) {}
+        StringRef name;
+    };
+
+
+} // end namespace Catch
+
+#endif // CATCH_TEST_RUN_INFO_HPP_INCLUDED
diff --git a/src/catch2/generators/catch_generators.cpp b/src/catch2/generators/catch_generators.cpp
index 3514e9f6..265ef37e 100644
--- a/src/catch2/generators/catch_generators.cpp
+++ b/src/catch2/generators/catch_generators.cpp
@@ -9,7 +9,7 @@
 #include <catch2/generators/catch_generators.hpp>
 #include <catch2/internal/catch_enforce.hpp>
 #include <catch2/generators/catch_generator_exception.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
+#include <catch2/internal/catch_run_context.hpp>
 
 namespace Catch {
 
diff --git a/src/catch2/interfaces/catch_interfaces_all.hpp b/src/catch2/interfaces/catch_interfaces_all.hpp
index 8ee9dcea..00c2fb2c 100644
--- a/src/catch2/interfaces/catch_interfaces_all.hpp
+++ b/src/catch2/interfaces/catch_interfaces_all.hpp
@@ -22,7 +22,6 @@
 #ifndef CATCH_INTERFACES_ALL_HPP_INCLUDED
 #define CATCH_INTERFACES_ALL_HPP_INCLUDED
 
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
 #include <catch2/interfaces/catch_interfaces_config.hpp>
 #include <catch2/interfaces/catch_interfaces_exception.hpp>
 #include <catch2/interfaces/catch_interfaces_generatortracker.hpp>
diff --git a/src/catch2/interfaces/catch_interfaces_capture.cpp b/src/catch2/interfaces/catch_interfaces_capture.cpp
deleted file mode 100644
index 9b40ee5d..00000000
--- a/src/catch2/interfaces/catch_interfaces_capture.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-
-//              Copyright Catch2 Authors
-// Distributed under the Boost Software License, Version 1.0.
-//   (See accompanying file LICENSE.txt or copy at
-//        https://www.boost.org/LICENSE_1_0.txt)
-
-// SPDX-License-Identifier: BSL-1.0
-
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
-
-namespace Catch {
-    IResultCapture::~IResultCapture() = default;
-}
diff --git a/src/catch2/interfaces/catch_interfaces_capture.hpp b/src/catch2/interfaces/catch_interfaces_capture.hpp
deleted file mode 100644
index c3c80d75..00000000
--- a/src/catch2/interfaces/catch_interfaces_capture.hpp
+++ /dev/null
@@ -1,110 +0,0 @@
-
-//              Copyright Catch2 Authors
-// Distributed under the Boost Software License, Version 1.0.
-//   (See accompanying file LICENSE.txt or copy at
-//        https://www.boost.org/LICENSE_1_0.txt)
-
-// SPDX-License-Identifier: BSL-1.0
-#ifndef CATCH_INTERFACES_CAPTURE_HPP_INCLUDED
-#define CATCH_INTERFACES_CAPTURE_HPP_INCLUDED
-
-#include <string>
-#include <chrono>
-
-#include <catch2/internal/catch_stringref.hpp>
-#include <catch2/internal/catch_result_type.hpp>
-#include <catch2/internal/catch_unique_ptr.hpp>
-
-namespace Catch {
-
-    class AssertionResult;
-    struct AssertionInfo;
-    struct SectionInfo;
-    struct SectionEndInfo;
-    struct MessageInfo;
-    struct MessageBuilder;
-    struct Counts;
-    struct AssertionReaction;
-    struct SourceLineInfo;
-
-    class ITransientExpression;
-    class IGeneratorTracker;
-
-    struct BenchmarkInfo;
-    template <typename Duration = std::chrono::duration<double, std::nano>>
-    struct BenchmarkStats;
-
-    namespace Generators {
-        class GeneratorUntypedBase;
-        using GeneratorBasePtr = Catch::Detail::unique_ptr<GeneratorUntypedBase>;
-    }
-
-
-    class IResultCapture {
-    public:
-        virtual ~IResultCapture();
-
-        virtual bool sectionStarted( StringRef sectionName,
-                                     SourceLineInfo const& sectionLineInfo,
-                                     Counts& assertions ) = 0;
-        virtual void sectionEnded( SectionEndInfo&& endInfo ) = 0;
-        virtual void sectionEndedEarly( SectionEndInfo&& endInfo ) = 0;
-
-        virtual IGeneratorTracker*
-        acquireGeneratorTracker( StringRef generatorName,
-                                 SourceLineInfo const& lineInfo ) = 0;
-        virtual IGeneratorTracker*
-        createGeneratorTracker( StringRef generatorName,
-                                SourceLineInfo lineInfo,
-                                Generators::GeneratorBasePtr&& generator ) = 0;
-
-        virtual void benchmarkPreparing( StringRef name ) = 0;
-        virtual void benchmarkStarting( BenchmarkInfo const& info ) = 0;
-        virtual void benchmarkEnded( BenchmarkStats<> const& stats ) = 0;
-        virtual void benchmarkFailed( StringRef error ) = 0;
-
-        virtual void pushScopedMessage( MessageInfo const& message ) = 0;
-        virtual void popScopedMessage( MessageInfo const& message ) = 0;
-
-        virtual void emplaceUnscopedMessage( MessageBuilder&& builder ) = 0;
-
-        virtual void handleFatalErrorCondition( StringRef message ) = 0;
-
-        virtual void handleExpr
-                (   AssertionInfo const& info,
-                    ITransientExpression const& expr,
-                    AssertionReaction& reaction ) = 0;
-        virtual void handleMessage
-                (   AssertionInfo const& info,
-                    ResultWas::OfType resultType,
-                    StringRef message,
-                    AssertionReaction& reaction ) = 0;
-        virtual void handleUnexpectedExceptionNotThrown
-                (   AssertionInfo const& info,
-                    AssertionReaction& reaction ) = 0;
-        virtual void handleUnexpectedInflightException
-                (   AssertionInfo const& info,
-                    std::string&& message,
-                    AssertionReaction& reaction ) = 0;
-        virtual void handleIncomplete
-                (   AssertionInfo const& info ) = 0;
-        virtual void handleNonExpr
-                (   AssertionInfo const &info,
-                    ResultWas::OfType resultType,
-                    AssertionReaction &reaction ) = 0;
-
-
-
-        virtual bool lastAssertionPassed() = 0;
-        virtual void assertionPassed() = 0;
-
-        // Deprecated, do not use:
-        virtual std::string getCurrentTestName() const = 0;
-        virtual const AssertionResult* getLastResult() const = 0;
-        virtual void exceptionEarlyReported() = 0;
-    };
-
-    IResultCapture& getResultCapture();
-}
-
-#endif // CATCH_INTERFACES_CAPTURE_HPP_INCLUDED
diff --git a/src/catch2/interfaces/catch_interfaces_reporter.hpp b/src/catch2/interfaces/catch_interfaces_reporter.hpp
index cf414f10..ad9c90fa 100644
--- a/src/catch2/interfaces/catch_interfaces_reporter.hpp
+++ b/src/catch2/interfaces/catch_interfaces_reporter.hpp
@@ -9,6 +9,7 @@
 #define CATCH_INTERFACES_REPORTER_HPP_INCLUDED
 
 #include <catch2/catch_section_info.hpp>
+#include <catch2/catch_test_run_info.hpp>
 #include <catch2/catch_totals.hpp>
 #include <catch2/catch_assertion_result.hpp>
 #include <catch2/internal/catch_message_info.hpp>
@@ -17,15 +18,18 @@
 #include <catch2/internal/catch_move_and_forward.hpp>
 #include <catch2/benchmark/catch_estimate.hpp>
 #include <catch2/benchmark/catch_outlier_classification.hpp>
-
+#include <catch2/internal/catch_benchmark_stats_fwd.hpp>
 
 #include <map>
 #include <string>
 #include <vector>
 #include <iosfwd>
+#include <chrono>
 
 namespace Catch {
 
+    struct BenchmarkInfo;
+
     struct ReporterDescription;
     struct ListenerDescription;
     struct TagInfo;
@@ -57,11 +61,6 @@ namespace Catch {
         std::map<std::string, std::string> m_customOptions;
     };
 
-    struct TestRunInfo {
-        constexpr TestRunInfo(StringRef _name) : name(_name) {}
-        StringRef name;
-    };
-
     struct AssertionStats {
         AssertionStats( AssertionResult const& _assertionResult,
                         std::vector<MessageInfo> const& _infoMessages,
diff --git a/src/catch2/internal/catch_assertion_handler.hpp b/src/catch2/internal/catch_assertion_handler.hpp
index ee7188ba..c8f8e469 100644
--- a/src/catch2/internal/catch_assertion_handler.hpp
+++ b/src/catch2/internal/catch_assertion_handler.hpp
@@ -10,14 +10,14 @@
 
 #include <catch2/catch_assertion_info.hpp>
 #include <catch2/internal/catch_decomposer.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
+#include <catch2/internal/catch_run_context.hpp>
 #include <catch2/internal/catch_lazy_expr.hpp>
 
 #include <string>
 
 namespace Catch {
 
-    class IResultCapture;
+    class RunContext;
 
     struct AssertionReaction {
         bool shouldDebugBreak = false;
@@ -29,7 +29,7 @@ namespace Catch {
         AssertionInfo m_assertionInfo;
         AssertionReaction m_reaction;
         bool m_completed = false;
-        IResultCapture& m_resultCapture;
+        RunContext& m_resultCapture;
 
     public:
         AssertionHandler
diff --git a/src/catch2/internal/catch_benchmark_stats_fwd.hpp b/src/catch2/internal/catch_benchmark_stats_fwd.hpp
new file mode 100644
index 00000000..60772561
--- /dev/null
+++ b/src/catch2/internal/catch_benchmark_stats_fwd.hpp
@@ -0,0 +1,23 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+#ifndef CATCH_BENCHMARK_STATS_FWD_HPP_INCLUDED
+#define CATCH_BENCHMARK_STATS_FWD_HPP_INCLUDED
+
+#include <chrono>
+
+namespace Catch {
+
+    // We cannot forward declare the type with default template argument
+    // multiple times, so it is split out into a separate header so that
+    // we can prevent multiple declarations in dependees
+    template <typename Duration = std::chrono::duration<double, std::nano>>
+    struct BenchmarkStats;
+
+} // end namespace Catch
+
+#endif // CATCH_BENCHMARK_STATS_FWD_HPP_INCLUDED
diff --git a/src/catch2/internal/catch_context.cpp b/src/catch2/internal/catch_context.cpp
index 3b1cc277..9151c385 100644
--- a/src/catch2/internal/catch_context.cpp
+++ b/src/catch2/internal/catch_context.cpp
@@ -27,7 +27,7 @@ namespace Catch {
         return *Context::currentContext;
     }
 
-    void Context::setResultCapture( IResultCapture* resultCapture ) {
+    void Context::setResultCapture( RunContext* resultCapture ) {
         m_resultCapture = resultCapture;
     }
 
diff --git a/src/catch2/internal/catch_context.hpp b/src/catch2/internal/catch_context.hpp
index 6ccb3b31..90838da2 100644
--- a/src/catch2/internal/catch_context.hpp
+++ b/src/catch2/internal/catch_context.hpp
@@ -12,12 +12,12 @@
 
 namespace Catch {
 
-    class IResultCapture;
+    class RunContext;
     class IConfig;
 
     class Context {
         IConfig const* m_config = nullptr;
-        IResultCapture* m_resultCapture = nullptr;
+        RunContext* m_resultCapture = nullptr;
 
         CATCH_EXPORT static Context* currentContext;
         friend Context& getCurrentMutableContext();
@@ -26,9 +26,9 @@ namespace Catch {
         friend void cleanUpContext();
 
     public:
-        IResultCapture* getResultCapture() const { return m_resultCapture; }
+        RunContext* getResultCapture() const { return m_resultCapture; }
         IConfig const* getConfig() const { return m_config; }
-        void setResultCapture( IResultCapture* resultCapture );
+        void setResultCapture( RunContext* resultCapture );
         void setConfig( IConfig const* config );
     };
 
diff --git a/src/catch2/internal/catch_fatal_condition_handler.cpp b/src/catch2/internal/catch_fatal_condition_handler.cpp
index f9702b18..84321123 100644
--- a/src/catch2/internal/catch_fatal_condition_handler.cpp
+++ b/src/catch2/internal/catch_fatal_condition_handler.cpp
@@ -28,7 +28,7 @@
 
 #include <catch2/internal/catch_context.hpp>
 #include <catch2/internal/catch_enforce.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
+#include <catch2/internal/catch_run_context.hpp>
 #include <catch2/internal/catch_windows_h_proxy.hpp>
 #include <catch2/internal/catch_stdstreams.hpp>
 
diff --git a/src/catch2/internal/catch_message_info.hpp b/src/catch2/internal/catch_message_info.hpp
index d2658429..1ef43fda 100644
--- a/src/catch2/internal/catch_message_info.hpp
+++ b/src/catch2/internal/catch_message_info.hpp
@@ -10,7 +10,7 @@
 
 #include <catch2/internal/catch_result_type.hpp>
 #include <catch2/internal/catch_source_line_info.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
+#include <catch2/internal/catch_stringref.hpp>
 
 #include <string>
 
diff --git a/src/catch2/internal/catch_run_context.cpp b/src/catch2/internal/catch_run_context.cpp
index 11fcda45..bdac876b 100644
--- a/src/catch2/internal/catch_run_context.cpp
+++ b/src/catch2/internal/catch_run_context.cpp
@@ -7,7 +7,11 @@
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/internal/catch_run_context.hpp>
 
+#include <catch2/interfaces/catch_interfaces_reporter.hpp>
+#include <catch2/catch_test_case_info.hpp>
+#include <catch2/catch_assertion_result.hpp>
 #include <catch2/catch_user_config.hpp>
+#include <catch2/catch_timer.hpp>
 #include <catch2/interfaces/catch_interfaces_generatortracker.hpp>
 #include <catch2/interfaces/catch_interfaces_config.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
@@ -15,10 +19,14 @@
 #include <catch2/internal/catch_enforce.hpp>
 #include <catch2/internal/catch_fatal_condition_handler.hpp>
 #include <catch2/internal/catch_random_number_generator.hpp>
-#include <catch2/catch_timer.hpp>
 #include <catch2/internal/catch_output_redirect.hpp>
 #include <catch2/internal/catch_assertion_handler.hpp>
 #include <catch2/internal/catch_test_failure_exception.hpp>
+#include <catch2/internal/catch_optional.hpp>
+#include <catch2/internal/catch_move_and_forward.hpp>
+#include <catch2/internal/catch_fatal_condition_handler.hpp>
+#include <catch2/internal/catch_test_case_tracker.hpp>
+#include <catch2/catch_message.hpp>
 
 #include <cassert>
 #include <algorithm>
@@ -164,30 +172,44 @@ namespace Catch {
         } // namespace
     }
 
-    RunContext::RunContext(IConfig const* _config, IEventListenerPtr&& reporter)
-    :   m_runInfo(_config->name()),
+
+    struct RunContext::RunContextImpl {
+        Optional<AssertionResult> lastResult;
+        FatalConditionHandler fatalConditionhandler;
+        TrackerContext trackerContext;
+        std::vector<MessageInfo> messages;
+        // Fake owners for unscoped messages
+        std::vector<ScopedMessage> messageScopes;
+        IEventListenerPtr reporter;
+        std::vector<SectionEndInfo> unfinishedSections;
+        std::vector<ITracker*> activeSections;
+    };
+
+    RunContext::RunContext(IConfig const* _config, IEventListenerPtr&& reporter):
+        m_impl( Detail::make_unique<RunContextImpl>() ),
+        m_runInfo(_config->name()),
         m_config(_config),
-        m_reporter(CATCH_MOVE(reporter)),
         m_lastAssertionInfo{ StringRef(), SourceLineInfo("",0), StringRef(), ResultDisposition::Normal },
-        m_includeSuccessfulResults( m_config->includeSuccessfulResults() || m_reporter->getPreferences().shouldReportAllAssertions )
+        m_includeSuccessfulResults( m_config->includeSuccessfulResults() || reporter->getPreferences().shouldReportAllAssertions )
     {
-        getCurrentMutableContext().setResultCapture( this );
-        m_reporter->testRunStarting(m_runInfo);
+        getCurrentMutableContext().setResultCapture(this);
+        m_impl->reporter = CATCH_MOVE( reporter );
+        m_impl->reporter->testRunStarting(m_runInfo);
     }
 
     RunContext::~RunContext() {
-        m_reporter->testRunEnded(TestRunStats(m_runInfo, m_totals, aborting()));
+        m_impl->reporter->testRunEnded(TestRunStats(m_runInfo, m_totals, aborting()));
     }
 
     Totals RunContext::runTest(TestCaseHandle const& testCase) {
         const Totals prevTotals = m_totals;
 
         auto const& testInfo = testCase.getTestCaseInfo();
-        m_reporter->testCaseStarting(testInfo);
+        m_impl->reporter->testCaseStarting( testInfo );
         m_activeTestCase = &testCase;
 
 
-        ITracker& rootTracker = m_trackerContext.startRun();
+        ITracker& rootTracker = m_impl->trackerContext.startRun();
         assert(rootTracker.isSectionTracker());
         static_cast<SectionTracker&>(rootTracker).addInitialFilters(m_config->getSectionsToRun());
 
@@ -228,10 +250,10 @@ namespace Catch {
         std::string redirectedCout;
         std::string redirectedCerr;
         do {
-            m_trackerContext.startCycle();
-            m_testCaseTracker = &SectionTracker::acquire(m_trackerContext, TestCaseTracking::NameAndLocationRef(testInfo.name, testInfo.lineInfo));
+            m_impl->trackerContext.startCycle();
+            m_testCaseTracker = &SectionTracker::acquire(m_impl->trackerContext, TestCaseTracking::NameAndLocationRef(testInfo.name, testInfo.lineInfo));
 
-            m_reporter->testCasePartialStarting(testInfo, testRuns);
+            m_impl->reporter->testCasePartialStarting( testInfo, testRuns );
 
             const auto beforeRunTotals = m_totals;
             std::string oneRunCout, oneRunCerr;
@@ -242,7 +264,7 @@ namespace Catch {
             const auto singleRunTotals = m_totals.delta(beforeRunTotals);
             auto statsForOneRun = TestCaseStats(testInfo, singleRunTotals, CATCH_MOVE(oneRunCout), CATCH_MOVE(oneRunCerr), aborting());
 
-            m_reporter->testCasePartialEnded(statsForOneRun, testRuns);
+            m_impl->reporter->testCasePartialEnded( statsForOneRun, testRuns );
             ++testRuns;
         } while (!m_testCaseTracker->isSuccessfullyCompleted() && !aborting());
 
@@ -253,11 +275,12 @@ namespace Catch {
             deltaTotals.testCases.failed++;
         }
         m_totals.testCases += deltaTotals.testCases;
-        m_reporter->testCaseEnded(TestCaseStats(testInfo,
-                                  deltaTotals,
-                                  CATCH_MOVE(redirectedCout),
-                                  CATCH_MOVE(redirectedCerr),
-                                  aborting()));
+        m_impl->reporter->testCaseEnded(
+            TestCaseStats( testInfo,
+                           deltaTotals,
+                           CATCH_MOVE( redirectedCout ),
+                           CATCH_MOVE( redirectedCerr ),
+                           aborting() ) );
 
         m_activeTestCase = nullptr;
         m_testCaseTracker = nullptr;
@@ -286,14 +309,15 @@ namespace Catch {
             m_lastAssertionPassed = true;
         }
 
-        m_reporter->assertionEnded(AssertionStats(result, m_messages, m_totals));
+        m_impl->reporter->assertionEnded(AssertionStats(result, m_impl->messages, m_totals));
 
-        if (result.getResultType() != ResultWas::Warning)
-            m_messageScopes.clear();
+        if ( result.getResultType() != ResultWas::Warning ) {
+            m_impl->messageScopes.clear();
+        }
 
         // Reset working state
         resetAssertionInfo();
-        m_lastResult = result;
+        m_impl->lastResult = result;
     }
     void RunContext::resetAssertionInfo() {
         m_lastAssertionInfo.macroName = StringRef();
@@ -302,18 +326,18 @@ namespace Catch {
 
     bool RunContext::sectionStarted(StringRef sectionName, SourceLineInfo const& sectionLineInfo, Counts & assertions) {
         ITracker& sectionTracker =
-            SectionTracker::acquire( m_trackerContext,
+            SectionTracker::acquire( m_impl->trackerContext,
                                      TestCaseTracking::NameAndLocationRef(
                                          sectionName, sectionLineInfo ) );
 
         if (!sectionTracker.isOpen())
             return false;
-        m_activeSections.push_back(&sectionTracker);
+        m_impl->activeSections.push_back(&sectionTracker);
 
         SectionInfo sectionInfo( sectionLineInfo, static_cast<std::string>(sectionName) );
         m_lastAssertionInfo.lineInfo = sectionInfo.lineInfo;
 
-        m_reporter->sectionStarting(sectionInfo);
+        m_impl->reporter->sectionStarting( sectionInfo );
 
         assertions = m_totals.assertions;
 
@@ -324,7 +348,7 @@ namespace Catch {
                                          SourceLineInfo const& lineInfo ) {
         using namespace Generators;
         GeneratorTracker* tracker = GeneratorTracker::acquire(
-            m_trackerContext,
+            m_impl->trackerContext,
             TestCaseTracking::NameAndLocationRef(
                  generatorName, lineInfo ) );
         m_lastAssertionInfo.lineInfo = lineInfo;
@@ -337,13 +361,13 @@ namespace Catch {
         Generators::GeneratorBasePtr&& generator ) {
 
         auto nameAndLoc = TestCaseTracking::NameAndLocation( static_cast<std::string>( generatorName ), lineInfo );
-        auto& currentTracker = m_trackerContext.currentTracker();
+        auto& currentTracker = m_impl->trackerContext.currentTracker();
         assert(
             currentTracker.nameAndLocation() != nameAndLoc &&
             "Trying to create tracker for a genreator that already has one" );
 
         auto newTracker = Catch::Detail::make_unique<Generators::GeneratorTracker>(
-            CATCH_MOVE(nameAndLoc), m_trackerContext, &currentTracker );
+            CATCH_MOVE(nameAndLoc), m_impl->trackerContext, &currentTracker );
         auto ret = newTracker.get();
         currentTracker.addChild( CATCH_MOVE( newTracker ) );
 
@@ -357,7 +381,7 @@ namespace Catch {
             return false;
         if (!m_config->warnAboutMissingAssertions())
             return false;
-        if (m_trackerContext.currentTracker().hasChildren())
+        if (m_impl->trackerContext.currentTracker().hasChildren())
             return false;
         m_totals.assertions.failed++;
         assertions.failed++;
@@ -368,50 +392,57 @@ namespace Catch {
         Counts assertions = m_totals.assertions - endInfo.prevAssertions;
         bool missingAssertions = testForMissingAssertions(assertions);
 
-        if (!m_activeSections.empty()) {
-            m_activeSections.back()->close();
-            m_activeSections.pop_back();
+        if (!m_impl->activeSections.empty()) {
+            m_impl->activeSections.back()->close();
+            m_impl->activeSections.pop_back();
         }
 
-        m_reporter->sectionEnded(SectionStats(CATCH_MOVE(endInfo.sectionInfo), assertions, endInfo.durationInSeconds, missingAssertions));
-        m_messages.clear();
-        m_messageScopes.clear();
+        m_impl->reporter->sectionEnded(
+            SectionStats( CATCH_MOVE( endInfo.sectionInfo ),
+                          assertions,
+                          endInfo.durationInSeconds,
+                          missingAssertions ) );
+        m_impl->messages.clear();
+        m_impl->messageScopes.clear();
     }
 
     void RunContext::sectionEndedEarly(SectionEndInfo&& endInfo) {
-        if ( m_unfinishedSections.empty() ) {
-            m_activeSections.back()->fail();
+        if ( m_impl->unfinishedSections.empty() ) {
+            m_impl->activeSections.back()->fail();
         } else {
-            m_activeSections.back()->close();
+            m_impl->activeSections.back()->close();
         }
-        m_activeSections.pop_back();
+        m_impl->activeSections.pop_back();
 
-        m_unfinishedSections.push_back(CATCH_MOVE(endInfo));
+        m_impl->unfinishedSections.push_back(CATCH_MOVE(endInfo));
     }
 
     void RunContext::benchmarkPreparing( StringRef name ) {
-        m_reporter->benchmarkPreparing(name);
+        m_impl->reporter->benchmarkPreparing( name );
     }
     void RunContext::benchmarkStarting( BenchmarkInfo const& info ) {
-        m_reporter->benchmarkStarting( info );
+        m_impl->reporter->benchmarkStarting( info );
     }
     void RunContext::benchmarkEnded( BenchmarkStats<> const& stats ) {
-        m_reporter->benchmarkEnded( stats );
+        m_impl->reporter->benchmarkEnded( stats );
     }
     void RunContext::benchmarkFailed( StringRef error ) {
-        m_reporter->benchmarkFailed( error );
+        m_impl->reporter->benchmarkFailed( error );
     }
 
     void RunContext::pushScopedMessage(MessageInfo const & message) {
-        m_messages.push_back(message);
+        m_impl->messages.push_back(message);
     }
 
     void RunContext::popScopedMessage(MessageInfo const & message) {
-        m_messages.erase(std::remove(m_messages.begin(), m_messages.end(), message), m_messages.end());
+        m_impl->messages.erase( std::remove( m_impl->messages.begin(),
+                                             m_impl->messages.end(),
+                                             message ),
+                                m_impl->messages.end() );
     }
 
     void RunContext::emplaceUnscopedMessage( MessageBuilder&& builder ) {
-        m_messageScopes.emplace_back( CATCH_MOVE(builder) );
+        m_impl->messageScopes.emplace_back( CATCH_MOVE(builder) );
     }
 
     std::string RunContext::getCurrentTestName() const {
@@ -421,7 +452,7 @@ namespace Catch {
     }
 
     const AssertionResult * RunContext::getLastResult() const {
-        return &(*m_lastResult);
+        return &(*m_impl->lastResult);
     }
 
     void RunContext::exceptionEarlyReported() {
@@ -430,7 +461,7 @@ namespace Catch {
 
     void RunContext::handleFatalErrorCondition( StringRef message ) {
         // First notify reporter that bad things happened
-        m_reporter->fatalErrorEncountered(message);
+        m_impl->reporter->fatalErrorEncountered(message);
 
         // Don't rebuild the result -- the stringification itself can cause more fatal errors
         // Instead, fake a result data.
@@ -449,20 +480,20 @@ namespace Catch {
         Counts assertions;
         assertions.failed = 1;
         SectionStats testCaseSectionStats(CATCH_MOVE(testCaseSection), assertions, 0, false);
-        m_reporter->sectionEnded(testCaseSectionStats);
+        m_impl->reporter->sectionEnded(testCaseSectionStats);
 
         auto const& testInfo = m_activeTestCase->getTestCaseInfo();
 
         Totals deltaTotals;
         deltaTotals.testCases.failed = 1;
         deltaTotals.assertions.failed = 1;
-        m_reporter->testCaseEnded(TestCaseStats(testInfo,
+        m_impl->reporter->testCaseEnded(TestCaseStats(testInfo,
                                   deltaTotals,
                                   std::string(),
                                   std::string(),
                                   false));
         m_totals.testCases.failed++;
-        m_reporter->testRunEnded(TestRunStats(m_runInfo, m_totals, false));
+        m_impl->reporter->testRunEnded(TestRunStats(m_runInfo, m_totals, false));
     }
 
     bool RunContext::lastAssertionPassed() {
@@ -473,7 +504,7 @@ namespace Catch {
         m_lastAssertionPassed = true;
         ++m_totals.assertions.passed;
         resetAssertionInfo();
-        m_messageScopes.clear();
+        m_impl->messageScopes.clear();
     }
 
     bool RunContext::aborting() const {
@@ -483,7 +514,7 @@ namespace Catch {
     void RunContext::runCurrentTest(std::string & redirectedCout, std::string & redirectedCerr) {
         auto const& testCaseInfo = m_activeTestCase->getTestCaseInfo();
         SectionInfo testCaseSection(testCaseInfo.lineInfo, testCaseInfo.name);
-        m_reporter->sectionStarting(testCaseSection);
+        m_impl->reporter->sectionStarting(testCaseSection);
         Counts prevAssertions = m_totals.assertions;
         double duration = 0;
         m_shouldReportUnexpected = true;
@@ -491,7 +522,7 @@ namespace Catch {
 
         Timer timer;
         CATCH_TRY {
-            if (m_reporter->getPreferences().shouldRedirectStdOut) {
+            if (m_impl->reporter->getPreferences().shouldRedirectStdOut) {
 #if !defined(CATCH_CONFIG_EXPERIMENTAL_REDIRECT)
                 RedirectedStreams redirectedStreams(redirectedCout, redirectedCerr);
 
@@ -524,18 +555,18 @@ namespace Catch {
 
         m_testCaseTracker->close();
         handleUnfinishedSections();
-        m_messages.clear();
-        m_messageScopes.clear();
+        m_impl->messages.clear();
+        m_impl->messageScopes.clear();
 
         SectionStats testCaseSectionStats(CATCH_MOVE(testCaseSection), assertions, duration, missingAssertions);
-        m_reporter->sectionEnded(testCaseSectionStats);
+        m_impl->reporter->sectionEnded(testCaseSectionStats);
     }
 
     void RunContext::invokeActiveTestCase() {
         // We need to engage a handler for signals/structured exceptions
         // before running the tests themselves, or the binary can crash
         // without failed test being reported.
-        FatalConditionHandlerGuard _(&m_fatalConditionhandler);
+        FatalConditionHandlerGuard _(&m_impl->fatalConditionhandler);
         // We keep having issue where some compilers warn about an unused
         // variable, even though the type has non-trivial constructor and
         // destructor. This is annoying and ugly, but it makes them stfu.
@@ -547,12 +578,12 @@ namespace Catch {
     void RunContext::handleUnfinishedSections() {
         // If sections ended prematurely due to an exception we stored their
         // infos here so we can tear them down outside the unwind process.
-        for (auto it = m_unfinishedSections.rbegin(),
-             itEnd = m_unfinishedSections.rend();
+        for (auto it = m_impl->unfinishedSections.rbegin(),
+             itEnd = m_impl->unfinishedSections.rend();
              it != itEnd;
              ++it)
             sectionEnded(CATCH_MOVE(*it));
-        m_unfinishedSections.clear();
+        m_impl->unfinishedSections.clear();
     }
 
     void RunContext::handleExpr(
@@ -560,7 +591,7 @@ namespace Catch {
         ITransientExpression const& expr,
         AssertionReaction& reaction
     ) {
-        m_reporter->assertionStarting( info );
+        m_impl->reporter->assertionStarting( info );
 
         bool negated = isFalseTest( info.resultDisposition );
         bool result = expr.getResult() != negated;
@@ -599,7 +630,7 @@ namespace Catch {
             StringRef message,
             AssertionReaction& reaction
     ) {
-        m_reporter->assertionStarting( info );
+        m_impl->reporter->assertionStarting( info );
 
         m_lastAssertionInfo = info;
 
@@ -669,7 +700,7 @@ namespace Catch {
     }
 
 
-    IResultCapture& getResultCapture() {
+    RunContext& getResultCapture() {
         if (auto* capture = getCurrentContext().getResultCapture())
             return *capture;
         else
diff --git a/src/catch2/internal/catch_run_context.hpp b/src/catch2/internal/catch_run_context.hpp
index de6999e5..ad45db54 100644
--- a/src/catch2/internal/catch_run_context.hpp
+++ b/src/catch2/internal/catch_run_context.hpp
@@ -8,36 +8,60 @@
 #ifndef CATCH_RUN_CONTEXT_HPP_INCLUDED
 #define CATCH_RUN_CONTEXT_HPP_INCLUDED
 
-#include <catch2/interfaces/catch_interfaces_reporter.hpp>
-#include <catch2/internal/catch_test_registry.hpp>
-#include <catch2/internal/catch_fatal_condition_handler.hpp>
-#include <catch2/catch_test_case_info.hpp>
-#include <catch2/catch_message.hpp>
+#include <catch2/catch_test_run_info.hpp>
 #include <catch2/catch_totals.hpp>
-#include <catch2/internal/catch_test_case_tracker.hpp>
 #include <catch2/catch_assertion_info.hpp>
-#include <catch2/catch_assertion_result.hpp>
-#include <catch2/internal/catch_optional.hpp>
-#include <catch2/internal/catch_move_and_forward.hpp>
+#include <catch2/internal/catch_benchmark_stats_fwd.hpp>
+#include <catch2/internal/catch_unique_ptr.hpp>
 
 #include <string>
+#include <chrono>
 
 namespace Catch {
 
+    class TestCaseHandle;
+    class AssertionResult;
+    struct AssertionInfo;
+    struct SectionInfo;
+    struct SectionEndInfo;
+    struct MessageInfo;
+    struct MessageBuilder;
+    struct Counts;
+    struct AssertionReaction;
+    struct SourceLineInfo;
+
+    class ITransientExpression;
+    class IGeneratorTracker;
+
+    struct BenchmarkInfo;
+
+    namespace Generators {
+        class GeneratorUntypedBase;
+        using GeneratorBasePtr = Catch::Detail::unique_ptr<GeneratorUntypedBase>;
+    }
+
+
     class IGeneratorTracker;
     class IConfig;
+    // Fixme: Take out the namespace?
+    namespace TestCaseTracking {
+        class ITracker;
+    }
+    using TestCaseTracking::ITracker;
 
-    ///////////////////////////////////////////////////////////////////////////
-
-    class RunContext final : public IResultCapture {
+    class IEventListener;
+    using IEventListenerPtr = Detail::unique_ptr<IEventListener>;
 
+    class RunContext {
+        struct RunContextImpl;
+        Detail::unique_ptr<RunContextImpl> m_impl;
     public:
         RunContext( RunContext const& ) = delete;
         RunContext& operator =( RunContext const& ) = delete;
 
         explicit RunContext( IConfig const* _config, IEventListenerPtr&& reporter );
 
-        ~RunContext() override;
+        ~RunContext();
 
         Totals runTest(TestCaseHandle const& testCase);
 
@@ -47,63 +71,63 @@ namespace Catch {
         void handleExpr
                 (   AssertionInfo const& info,
                     ITransientExpression const& expr,
-                    AssertionReaction& reaction ) override;
+                    AssertionReaction& reaction );
         void handleMessage
                 (   AssertionInfo const& info,
                     ResultWas::OfType resultType,
                     StringRef message,
-                    AssertionReaction& reaction ) override;
+                    AssertionReaction& reaction );
         void handleUnexpectedExceptionNotThrown
                 (   AssertionInfo const& info,
-                    AssertionReaction& reaction ) override;
+                    AssertionReaction& reaction );
         void handleUnexpectedInflightException
                 (   AssertionInfo const& info,
                     std::string&& message,
-                    AssertionReaction& reaction ) override;
+                    AssertionReaction& reaction );
         void handleIncomplete
-                (   AssertionInfo const& info ) override;
+                (   AssertionInfo const& info );
         void handleNonExpr
                 (   AssertionInfo const &info,
                     ResultWas::OfType resultType,
-                    AssertionReaction &reaction ) override;
+                    AssertionReaction &reaction );
 
         bool sectionStarted( StringRef sectionName,
                              SourceLineInfo const& sectionLineInfo,
-                             Counts& assertions ) override;
+                             Counts& assertions );
 
-        void sectionEnded( SectionEndInfo&& endInfo ) override;
-        void sectionEndedEarly( SectionEndInfo&& endInfo ) override;
+        void sectionEnded( SectionEndInfo&& endInfo );
+        void sectionEndedEarly( SectionEndInfo&& endInfo );
 
         IGeneratorTracker*
         acquireGeneratorTracker( StringRef generatorName,
-                                 SourceLineInfo const& lineInfo ) override;
+                                 SourceLineInfo const& lineInfo );
         IGeneratorTracker* createGeneratorTracker(
             StringRef generatorName,
             SourceLineInfo lineInfo,
-            Generators::GeneratorBasePtr&& generator ) override;
+            Generators::GeneratorBasePtr&& generator );
 
 
-        void benchmarkPreparing( StringRef name ) override;
-        void benchmarkStarting( BenchmarkInfo const& info ) override;
-        void benchmarkEnded( BenchmarkStats<> const& stats ) override;
-        void benchmarkFailed( StringRef error ) override;
+        void benchmarkPreparing( StringRef name );
+        void benchmarkStarting( BenchmarkInfo const& info );
+        void benchmarkEnded( BenchmarkStats<> const& stats );
+        void benchmarkFailed( StringRef error );
 
-        void pushScopedMessage( MessageInfo const& message ) override;
-        void popScopedMessage( MessageInfo const& message ) override;
+        void pushScopedMessage( MessageInfo const& message );
+        void popScopedMessage( MessageInfo const& message );
 
-        void emplaceUnscopedMessage( MessageBuilder&& builder ) override;
+        void emplaceUnscopedMessage( MessageBuilder&& builder );
 
-        std::string getCurrentTestName() const override;
+        std::string getCurrentTestName() const;
 
-        const AssertionResult* getLastResult() const override;
+        const AssertionResult* getLastResult() const;
 
-        void exceptionEarlyReported() override;
+        void exceptionEarlyReported();
 
-        void handleFatalErrorCondition( StringRef message ) override;
+        void handleFatalErrorCondition( StringRef message );
 
-        bool lastAssertionPassed() override;
+        bool lastAssertionPassed();
 
-        void assertionPassed() override;
+        void assertionPassed();
 
     public:
         // !TBD We need to do this another way!
@@ -133,18 +157,10 @@ namespace Catch {
         TestRunInfo m_runInfo;
         TestCaseHandle const* m_activeTestCase = nullptr;
         ITracker* m_testCaseTracker = nullptr;
-        Optional<AssertionResult> m_lastResult;
 
         IConfig const* m_config;
         Totals m_totals;
-        IEventListenerPtr m_reporter;
-        std::vector<MessageInfo> m_messages;
-        std::vector<ScopedMessage> m_messageScopes; /* Keeps owners of so-called unscoped messages. */
         AssertionInfo m_lastAssertionInfo;
-        std::vector<SectionEndInfo> m_unfinishedSections;
-        std::vector<ITracker*> m_activeSections;
-        TrackerContext m_trackerContext;
-        FatalConditionHandler m_fatalConditionhandler;
         bool m_lastAssertionPassed = false;
         bool m_shouldReportUnexpected = true;
         bool m_includeSuccessfulResults;
@@ -152,6 +168,9 @@ namespace Catch {
 
     void seedRng(IConfig const& config);
     unsigned int rngSeed();
+
+    RunContext& getResultCapture();
+
 } // end namespace Catch
 
 #endif // CATCH_RUN_CONTEXT_HPP_INCLUDED
diff --git a/src/catch2/internal/catch_test_macro_impl.hpp b/src/catch2/internal/catch_test_macro_impl.hpp
index e569680b..e05e2c20 100644
--- a/src/catch2/internal/catch_test_macro_impl.hpp
+++ b/src/catch2/internal/catch_test_macro_impl.hpp
@@ -10,7 +10,6 @@
 
 #include <catch2/catch_user_config.hpp>
 #include <catch2/internal/catch_assertion_handler.hpp>
-#include <catch2/interfaces/catch_interfaces_capture.hpp>
 #include <catch2/internal/catch_stringref.hpp>
 #include <catch2/internal/catch_source_line_info.hpp>
 
diff --git a/src/catch2/meson.build b/src/catch2/meson.build
index 9b84f79a..0961edbe 100644
--- a/src/catch2/meson.build
+++ b/src/catch2/meson.build
@@ -56,7 +56,6 @@ internal_headers = [
   'generators/catch_generators_random.hpp',
   'generators/catch_generators_range.hpp',
   'interfaces/catch_interfaces_all.hpp',
-  'interfaces/catch_interfaces_capture.hpp',
   'interfaces/catch_interfaces_config.hpp',
   'interfaces/catch_interfaces_exception.hpp',
   'interfaces/catch_interfaces_generatortracker.hpp',
@@ -64,6 +63,7 @@ internal_headers = [
   'interfaces/catch_interfaces_reporter_factory.hpp',
   'interfaces/catch_interfaces_testcase.hpp',
   'internal/catch_assertion_handler.hpp',
+  'internal/catch_benchmark_stats_fwd.hpp',
   'internal/catch_case_insensitive_comparisons.hpp',
   'internal/catch_case_sensitive.hpp',
   'internal/catch_clara.hpp',
@@ -165,6 +165,7 @@ internal_headers = [
   'catch_template_test_macros.hpp',
   'catch_test_case_info.hpp',
   'catch_test_macros.hpp',
+  'catch_test_run_info.hpp',
   'catch_test_spec.hpp',
   'catch_timer.hpp',
   'catch_tostring.hpp',
@@ -178,7 +179,6 @@ internal_sources = files(
   'generators/catch_generator_exception.cpp',
   'generators/catch_generators.cpp',
   'generators/catch_generators_random.cpp',
-  'interfaces/catch_interfaces_capture.cpp',
   'interfaces/catch_interfaces_config.cpp',
   'interfaces/catch_interfaces_exception.cpp',
   'interfaces/catch_interfaces_generatortracker.cpp',