diff --git a/.github/workflows/cla-check.yaml b/.github/workflows/cla-check.yaml
new file mode 100644
index 00000000..7c3bc45f
--- /dev/null
+++ b/.github/workflows/cla-check.yaml
@@ -0,0 +1,27 @@
+# -----------------------------------------------------------------------------
+# (C) Crown copyright Met Office. All rights reserved.
+# The file LICENCE, distributed with this code, contains details of the terms
+# under which the code may be used.
+# -----------------------------------------------------------------------------
+
+# Check Contributor Licence Agreement
+
+name: Legal
+
+on:
+  pull_request_target:
+
+concurrency:
+  # Automatically cancels the workflow run instantly before the
+  # engine can parse empty jobs and generate notification emails
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: ${{ github.event.pull_request.head.repo.full_name != 'MetOffice/simulation-systems' }}
+
+permissions: {}
+
+jobs:
+  cla:
+    uses: MetOffice/growss/.github/workflows/cla-check.yaml@0f9ffe6a138ae9943053621916a850a075997db8 # v1.0.0
+    permissions:
+      contents: read  # Required to evaluate the event trigger metadata safely
+      pull-requests: write  # Required for the downstream engine to post status comments on the PR
diff --git a/.github/workflows/publish_wps.yaml b/.github/workflows/publish_wps.yaml
index 8bbeed4d..931fea1b 100644
--- a/.github/workflows/publish_wps.yaml
+++ b/.github/workflows/publish_wps.yaml
@@ -20,9 +20,9 @@ concurrency:
 
 jobs:
   docs:
-    uses: MetOffice/growss/.github/workflows/sphinx-docs.yaml@develop
+    uses: MetOffice/growss/.github/workflows/sphinx-docs.yaml@0f9ffe6a138ae9943053621916a850a075997db8 # v1.0.0
     with:
-      python-version: "3.12.9"
+      python-version: "3.12.12"
       timeout-minutes: 10
       docs-dir: .
       source-dir: ./source
diff --git a/.github/workflows/track-review-project.yaml b/.github/workflows/track-review-project.yaml
index 639477cd..1ab60122 100644
--- a/.github/workflows/track-review-project.yaml
+++ b/.github/workflows/track-review-project.yaml
@@ -1,3 +1,9 @@
+# -----------------------------------------------------------------------------
+# (C) Crown copyright Met Office. All rights reserved.
+# The file LICENCE, distributed with this code, contains details of the terms
+# under which the code may be used.
+# -----------------------------------------------------------------------------
+
 name: Track Review Project
 
 on:
@@ -7,11 +13,14 @@ on:
       - completed
 
 permissions:
-  actions: read
-  contents: read
-  pull-requests: write
+  contents: read  # Required to evaluate the event trigger metadata safely
 
 jobs:
   track_review_project:
-    uses: MetOffice/growss/.github/workflows/track-review-project.yaml@main
-    secrets: inherit
+    permissions:
+      actions: read  # Required to check out code or parse files safely
+      contents: read  # Required to read the upstream triggered workflow run artifact status
+      pull-requests: write  # Required for the downstream engine to add comments or update metadata on the PR
+    uses: MetOffice/growss/.github/workflows/track-review-project.yaml@0f9ffe6a138ae9943053621916a850a075997db8 # v1.0.0
+    secrets:
+      PROJECT_ACTION_PAT: ${{ secrets.PROJECT_ACTION_PAT }}
diff --git a/.github/workflows/trigger-project-workflow.yaml b/.github/workflows/trigger-project-workflow.yaml
index ccb7a55b..68b85861 100644
--- a/.github/workflows/trigger-project-workflow.yaml
+++ b/.github/workflows/trigger-project-workflow.yaml
@@ -1,3 +1,9 @@
+# -----------------------------------------------------------------------------
+# (C) Crown copyright Met Office. All rights reserved.
+# The file LICENCE, distributed with this code, contains details of the terms
+# under which the code may be used.
+# -----------------------------------------------------------------------------
+
 name: Trigger Review Project
 
 on:
@@ -7,11 +13,14 @@ on:
   pull_request_review_comment:
 
 permissions:
-  actions: read
-  contents: read
-  pull-requests: write
+  contents: read  # Required to evaluate the event trigger metadata safely
 
 jobs:
   trigger_project_workflow:
-    uses: MetOffice/growss/.github/workflows/trigger-project-workflow.yaml@main
-    secrets: inherit
+    if: github.repository == 'MetOffice/simulation-systems'
+
+    permissions:
+      actions: read  # Required to check out code or parse files safely
+      contents: read  # Required to read the upstream triggered workflow run artifact status
+      pull-requests: write  # Required for the downstream engine to add comments or update metadata on the PR
+    uses: MetOffice/growss/.github/workflows/trigger-project-workflow.yaml@0f9ffe6a138ae9943053621916a850a075997db8 # v1.0.0
diff --git a/.github/zizmor.yml b/.github/zizmor.yml
new file mode 100644
index 00000000..e66c5e79
--- /dev/null
+++ b/.github/zizmor.yml
@@ -0,0 +1,15 @@
+# ------------------------------------------------------------------------------
+# (c) Crown copyright Met Office. All rights reserved.
+# The file LICENCE, distributed with this code, contains details of the terms
+# under which the code may be used.
+# ------------------------------------------------------------------------------
+
+# Rules for Zizmor GitHub workflow linter. This file is used to configure which
+# rules to ignore for specific workflow files, allowing for exceptions to be
+# made where necessary while still enforcing best practices across the codebase.
+rules:
+  dangerous-triggers:
+    ignore:
+      - "cla-check.yaml"
+      - "track-review-project.yaml"
+      - "trigger-project-workflow.yaml"
diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
new file mode 100644
index 00000000..8913a005
--- /dev/null
+++ b/CONTRIBUTORS.md
@@ -0,0 +1,5 @@
+# Contributors
+
+| GitHub user | Real Name       | Affiliation | Date       |
+| ----------- | --------------- | ----------- | ---------- |
+| yaswant     | Yaswant Pradhan | Met Office  | 2026-07-17 |
diff --git a/pyproject.toml b/pyproject.toml
index 255263c3..200bd8e0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,8 +1,9 @@
 [project]
 name = "simulation-systems"
 version = "0.1.0"
-description = "Simulation Systems Working Practices"
+description = "Simulation Systems Working Practices & Discussions"
 readme = "README.md"
+license = { file = "LICENSE" }
 requires-python = ">=3.11"
 dependencies = [
     "pydata-sphinx-theme==0.16.1",
@@ -14,3 +15,11 @@ dependencies = [
     "sphinxcontrib-svg2pdfconverter==1.3.0",
     "sphinxcontrib-mermaid==1.1.0",
 ]
+
+[project.urls]
+repository = "https://github.com/MetOffice/simulation-systems"
+documentation = "https://metoffice.github.io/simulation-systems/"
+discussion = "https://github.com/MetOffice/simulation-systems/discussions"
+
+[tool.setuptools]
+packages = []