Martyn’s Law duties are not yet in force — the SIA expects commencement in early spring 2027. martynslaw.app helps you prepare, document and keep evidence now.
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Government Publishes Its Collection of Documents on Martyn's Law

Published

GOV.UK now hosts a single collection of official documents on the Terrorism (Protection of Premises) Act 2025, which became law on 3 April 2025. The duties are not yet in force.

What happened

The government has brought together its documents about the Terrorism (Protection of Premises) Act 2025 in one place on GOV.UK. The Act, widely known as Martyn's Law, received Royal Assent on 3 April 2025. It is named after Martyn Hett, one of the 22 people killed in the 2017 Manchester Arena attack. The collection is a reference point for the legislation as it moves towards commencement.

What it means for venues

This is background reading, not a new set of obligations. The Act's duties are still not in force. Commencement is expected in spring 2027, and the exact date has not yet been confirmed. The Security Industry Authority will be the regulator, but its notification process is not live yet. Nothing changes day to day for pubs, churches, halls, cinemas or event spaces right now.

A reminder on the tiers

The Act sets two tiers based on how many people may reasonably be expected at the same time, including staff. The standard tier covers premises where 200 to 799 people may be present. The enhanced tier covers 800 or more. Knowing roughly which tier your venue is likely to fall into is a sensible first step.

What to do now

There is no deadline to meet today, so there is no need to rush. You can use this quieter period to familiarise yourself with the official material, get a feel for your likely tier, and start thinking about how you would prepare. Treat it as readiness, not compliance, and keep an eye out for the confirmed commencement date and the SIA's process going live.

This is our plain-English summary. Read the original in full at GOV.UK.

Where does your venue stand?

The free readiness checker gives you an indicative tier in about five minutes — or read the plain-English guide to the whole Act.

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What this is — and what it is not

martynslaw.app is a preparation and document-management tool. It is not legal advice, not official guidance, not official certification, not SIA approval and not a guarantee of compliance. The responsible person must review and approve all documents before use.

martynslaw.app is an independent product. It is not affiliated with, or endorsed by, the Home Office, the Security Industry Authority or any other public body. Official sources are cited as sources only.