diff --git a/.github/actions/test-build-package/action.yml b/.github/actions/test-build-package/action.yml
new file mode 100644
index 00000000..e53b76d0
--- /dev/null
+++ b/.github/actions/test-build-package/action.yml
@@ -0,0 +1,21 @@
+name: Test build package
+
+on:
+  workflow_call:
+
+runs:
+  using: "composite"
+  steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-node@v3
+      with:
+        node-version-file: .nvmrc
+    - name: Install dependencies
+      run: npm ci
+      shell: bash
+    - name: Build package
+      run: ./tasks/build-package.sh
+      shell: bash
+    - name: Test built package
+      run: node tasks/test-package.js || exit 1
+      shell: bash
diff --git a/.github/actions/test-build/action.yml b/.github/actions/test-build/action.yml
index 69ea6441..edaa9b4b 100644
--- a/.github/actions/test-build/action.yml
+++ b/.github/actions/test-build/action.yml
@@ -1,4 +1,4 @@
-name: Test build
+name: Test build Storybook
 
 on:
   workflow_call:
@@ -16,9 +16,3 @@ runs:
     - name: Build Storybook
       run: npm run build
       shell: bash
-    - name: Build package
-      run: ./tasks/build-package.sh
-      shell: bash
-    - name: Test built package
-      run: node tasks/test-package.js || exit 1
-      shell: bash
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
index bfc2c598..32051ea8 100644
--- a/.github/workflows/npm-publish.yml
+++ b/.github/workflows/npm-publish.yml
@@ -42,13 +42,23 @@ jobs:
       - check
     steps:
       - uses: actions/checkout@v3
-      - name: Test build
+      - name: Test build Storybook
         uses: ./.github/actions/test-build
 
+  test-build-package:
+    runs-on: ubuntu-latest
+    needs:
+      - check
+    steps:
+      - uses: actions/checkout@v3
+      - name: Test build package
+        uses: ./.github/actions/test-build-package
+
   prototype-kit:
     runs-on: ubuntu-latest
     needs:
       - test-build
+      - test-build-package
     steps:
       - uses: actions/checkout@v3
       - name: GOV.UK prototype kit test
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 0924cdc5..d545aa8f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -24,13 +24,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: Tests
+      - name: Test build Storybook
         uses: ./.github/actions/test-build
 
+  test-build-package:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Test build package
+        uses: ./.github/actions/test-build-package
+
   prototype-kit:
     runs-on: ubuntu-latest
     needs:
       - test-build
+      - test-build-package
     steps:
       - uses: actions/checkout@v3
       - name: GOV.UK prototype kit test