diff --git a/.github/workflows/pr_closed.yaml b/.github/workflows/pr_closed.yaml
new file mode 100644
index 0000000..506a375
--- /dev/null
+++ b/.github/workflows/pr_closed.yaml
@@ -0,0 +1,56 @@
+name: PR Closed
+
+on:
+  workflow_dispatch:
+  pull_request:
+    types: [closed]
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  check-merge-or-workflow-dispatch:
+    runs-on: ubuntu-latest
+    outputs:
+      deploy: ${{ steps.check.outputs.deploy }}
+    steps:
+      - name: Check if PR was merged or wor§kflow is triggered by workflow_dispatch
+        id: check
+        run: |
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
+            echo "deploy=true" >> $GITHUB_OUTPUT
+            echo "Job triggered by workflow_dispatch - running 'deploy-main'"
+          elif [[ "${{ github.event_name }}" == "pull_request" && "${{ github.event.pull_request.merged }}" == "true" ]]; then
+            echo "deploy=true" >> $GITHUB_OUTPUT
+            echo "Job triggered by Merged PR - running 'deploy-main'"
+          else
+            echo "deploy=false" >> $GITHUB_OUTPUT
+            echo "Job not triggered by workflow_dispatch or Merged PR - Skipping 'deploy-main'"
+          fi
+
+  deploy-main:
+    needs: check-merge-or-workflow-dispatch
+    name: Deploy changes to main in dev AWS account
+    if: needs.check-merge-or-workflow-dispatch.outputs.deploy == 'true'
+
+    permissions:
+      id-token: write
+      contents: read
+
+    strategy:
+      max-parallel: 1
+      matrix:
+        component: [acct, cdn]
+
+    uses: ./.github/workflows/reusable_internal_repo_build.yaml
+    secrets: inherit
+    with:
+      release_version: main
+      target_workflow: "dispatch-deploy-static-notify-web-gateway.yaml"
+      tf_environment: "main"
+      tf_group: "nhs-notify-web-dev"
+      tf_component: ${{ matrix.component }}
+      tf_action: "apply"
diff --git a/.github/workflows/pr_merge.yaml b/.github/workflows/pr_merge.yaml
deleted file mode 100644
index d3f474d..0000000
--- a/.github/workflows/pr_merge.yaml
+++ /dev/null
@@ -1,35 +0,0 @@
-name: PR Merged
-
-on:
-  workflow_dispatch:
-  pull_request:
-    types: [closed]
-    branches:
-      - main
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: false
-
-jobs:
-  deploy-main:
-    name: Deploy changes to main
-
-    permissions:
-      id-token: write
-      contents: read
-
-    strategy:
-      max-parallel: 1
-      matrix:
-        component: [acct, cdn]
-
-    uses: ./.github/workflows/reusable_internal_repo_build.yaml
-    secrets: inherit
-    with:
-      release_version: main
-      target_workflow: "dispatch-deploy-static-notify-web-gateway.yaml"
-      tf_environment: "main"
-      tf_group: "nhs-notify-web-dev"
-      tf_component: ${{ matrix.component }}
-      tf_action: "apply"