diff --git a/.github/workflows/branchCheck.yml b/.github/workflows/branchCheck.yml
new file mode 100644
index 0000000000..e6a090cfa7
--- /dev/null
+++ b/.github/workflows/branchCheck.yml
@@ -0,0 +1,30 @@
+name: Branch check
+on: [ push ]
+jobs:
+  check:
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Check branch
+      run: |
+        import os
+        import re
+
+        def version() :
+
+          versions = {}
+          versionRe = re.compile( r"^(gaffer.*Version.*) = (\S+)" )
+          with open( "SConstruct" ) as sconstruct :
+            for line in sconstruct.readlines() :
+              versionMatch = versionRe.match( line )
+              if versionMatch :
+                versions[versionMatch.group( 1 )] = versionMatch.group( 2 ).strip( "'\"" )
+
+          return [ int( versions["gafferMilestoneVersion"] ), int( versions["gafferMajorVersion"] ) ]
+
+        currentVersion = version()
+        print( currentVersion )
+
+        print( os.environ )
+
+      shell: python