What does Martyn's Law mean for your venue?
Martyn’s Law requires venues where 200 or more people may be present to prepare for a terrorist attack. Check your tier, then build your procedures.
Check your tier
Your result
Enter the number of people to see your tier.
Sources: Terrorism (Protection of Premises) Act 2025 · ProtectUK (Home Office / NaCTSO) · Security Industry Authority (SIA)
Rules last reviewed 27 October 2026. General information, not legal advice.
Key dates (as reported, check GOV.UK)
- 3 April 2025 — the Terrorism (Protection of Premises) Act 2025 became law.
- 15 April 2026 — the Home Office published its statutory guidance.
- Autumn 2026 — final SIA regulatory guidance expected.
- Around April 2027 (expected) — duties start; responsible persons then have three months to notify the SIA.
Frequently asked questions
Which venues are covered?
Premises used for listed activities — such as shops, pubs and restaurants, entertainment, sport, visitor attractions, places of worship, education and community halls — where 200 or more people may reasonably be present at the same time.
What is the difference between the standard and enhanced tiers?
Standard tier (200–799 people) is about procedures: evacuation, invacuation, lockdown and communication. Enhanced tier (800 or more, and qualifying events) adds physical measures, a documented security plan and, for organisations, a designated senior individual.
Do I need to buy security equipment?
Not for the standard tier. The duty is to have procedures that are reasonably practicable for your premises; it does not require equipment or physical changes.
Is this legal advice?
No. It is general information based on the Act and the Home Office guidance. Check the official guidance for your premises.
ohdock provides software tools and general information, not legal advice. Check the official texts, or ask a qualified adviser, for your situation.