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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How you'll tell the SIA your venue is in scope: new notification guidance

Published

The government has published guidance on the duty to notify the Security Industry Authority about premises covered by Martyn's Law. The process is not yet live, but the detail is now clearer.

What happened

GOV.UK has released guidance explaining the notification requirement under section 9 of the Terrorism (Protection of Premises) Act 2025. In simple terms, this covers how responsible people for premises in scope will need to let the Security Industry Authority (SIA) know their venue is covered. The SIA is the regulator for the new rules.

What it means for venues

If your premises fall within the standard tier (200 to 799 people who may reasonably be expected at once, including staff) or the enhanced tier (800 or more), you will at some point need to notify the SIA. This new guidance gives an early look at what that step will involve, so you can plan ahead rather than be caught out later.

Remember the timing

The duties are not in force yet. Commencement is expected in spring 2027, and the exact date is still to be confirmed. The SIA's notification process is also not live at this stage. Nothing here requires action from you today.

What to do now

Work out roughly how many people your venue can hold at peak times, staff included, so you know which tier is likely to apply. Read the guidance so the notification step is familiar when it opens. Keep a note of who in your organisation would be responsible for making the notification.

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.