Martyn's Law guides
Everything you need to understand the Terrorism (Protection of Premises) Act 2025 — written for the people who actually have to act on it. Start with the overview, then dig into the bits that apply to you.
What is Martyn's Law?
Martyn's Law (the Terrorism (Protection of Premises) Act 2025) explained in plain English: what it is, who it applies to, the two tiers, the timeline, and what you need to do.
Find out whether your premises is in scope of Martyn's Law: the qualifying premises test, the 17 qualifying activities, the public-access rule, and the 200-person threshold.
What standard-tier premises (200–799 capacity) must do under Martyn's Law: notify the SIA, put public protection procedures in place, raise staff awareness, and keep records.
What enhanced-tier premises and events (800+ capacity) must do under Martyn's Law: public protection measures, a documented assessment, a senior responsible person, and the penalties for non-compliance.
Martyn's Law standard-tier premises need four public protection procedures: evacuation, invacuation, lockdown and communication. Here's what each one means and what good looks like.
How to work out whether 200+ people may be present at your premises for Martyn's Law — including staff, the 'from time to time' rule, and what evidence to base your figure on.
Who is the 'responsible person' under Martyn's Law, what they are responsible for, and how to record it — for standard-tier premises like halls, churches, pubs and schools.
How Martyn's Law is enforced: the Security Industry Authority (SIA) as regulator, the notification duty, inspection and enforcement powers, penalties, and the timeline to commencement.
A practical, step-by-step Martyn's Law checklist for standard-tier premises (200–799): confirm scope, name the responsible person, set your four procedures, brief staff, and keep records.