GitHub Actions vs GitLab CI vs CircleCI — UK CI/CD (2026)

Updated: March 20269 min read
🇬🇧 UK💷 GBP📊 Comparison🔒 UK GDPR⚖️ UK Law

GitHub Actions is ClickMasters' default for all UK projects on GitHub — tightest GitHub integration, largest marketplace of actions, and AWS OIDC (no long-lived credentials — strongest Cyber Essentials A3 access control). GitLab CI is right when the team uses GitLab (built-in CI/CD is GitLab's core strength — no separate tool needed). CircleCI is legacy for most new UK projects — GitHub Actions has matched or exceeded CircleCI for typical UK use cases. CI/CD platform choice affects UK Cyber Essentials A2 (14-day patching evidence), FCA PS21/3 change management audit trail, and AWS OIDC security posture.

FactorGitHub ActionsGitLab CICircleCI
AWS OIDC (no long-lived credentials)✅ Native — GitHub OIDC → AWS IAM role✅ GitLab OIDC — availableCircleCI OIDC — available
Cyber Essentials patching evidence✅ Actions run history — Dependabot PR merge = patch audit trailMerge request pipeline historyCircleCI pipeline history
FCA PS21/3 change management✅ Required status checks + branch protection = change gateMerge request approvals — equivalentRequired context checks — available
NHS DTAC Domain 3 security scans✅ Marketplace: Semgrep, Trivy, OWASP ZAP actions pre-builtGitLab SAST/DAST built-in — goodCircleCI orbs for Snyk, Trivy
GitHub integration✅ Native — same platformRequires webhook/mirrorGitHub connector available
Self-hosted runners (NHS data residency)✅ GitHub Actions self-hosted runners — eu-west-2✅ GitLab Runner self-hosted — eu-west-2CircleCI self-hosted runners — available
Cost at medium UK team (10 devs)✅ GitHub Teams + Actions includedGitLab Premium (~£15/user/month)CircleCI (~£400+/month for medium usage)
ClickMasters default✅ All GitHub-based UK projectsAll GitLab-based UK projectsLegacy only — no new projects

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