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 early guidance to help venues get ready for Martyn's Law

Published

GOV.UK has released guidance explaining Martyn's Law and how premises can start preparing. The duties are not yet in force, but the material gives operators a head start.

What happened

The government has published guidance on GOV.UK to help businesses and other premises understand Martyn's Law, the everyday name for the Terrorism (Protection of Premises) Act 2025. The material is intended to explain the law and support those who will need to prepare for it. You can read the source in full via the link.

What it means for venues

This is preparation and familiarisation information. The duties under the Act are not yet enforceable. Commencement is expected in spring 2027, and the exact date has not been confirmed. The guidance is a chance to learn what may be expected before anything is required of you.

A quick reminder of 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 expecting 200 to 799 people. The enhanced tier covers 800 or more. Working out which tier applies to your site is a sensible first step.

What to do now

Have a read of the published guidance and note anything relevant to your premises. Estimate your likely capacity so you know which tier you may fall into. There is no need to rush or panic — this is about getting familiar early. The Security Industry Authority will be the regulator, but its notification process is not yet 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.