Guide ยท Updated 6 November 2026
How to notify the SIA under Martyn's Law
Short answer: once Martyn's Law comes into force, whoever is responsible for premises in scope must tell the Security Industry Authority (SIA). For premises that are already open, you will have three months from the start date to do it, using the SIA's online portal.
Who has to notify?
The Responsible Person for each qualifying premises: the individual, organisation or company with control of the premises for the use that brings it into scope. That covers both Standard Tier (200 to 799 people) and Enhanced Tier (800 or more) premises. Under 200 people, you do not need to notify.
When do I have to notify?
- Existing premises: within three months of the relevant part of the Act coming into force.
- Changes: if the information you gave stops being accurate, you must update it within 28 days.
- Stopping: you must also tell the SIA when you stop being responsible, for example if you sell the business or give up the lease.
Qualifying events have their own, shorter deadlines linked to when the event is first publicised.
How do I notify?
Through an online portal the SIA is building, unless it directs otherwise. The SIA has said it will publish details of how the portal works nearer the start date. There is nothing to submit yet.
What information will I need?
The notification rules were set out in regulations published in 2026. Have this to hand:
- the Responsible Person's name and contact details, and company details if it's a business
- the address of the premises
- what the premises is used for (for example a pub, restaurant, hall or place of worship)
- how many people you reasonably expect at the same time, and so which tier you are in
What should I do now?
- Work out your number and tier. See does Martyn's Law apply to me?
- Decide who your Responsible Person is, and write it down.
- Sign up for updates on the SIA's Martyn's Law page so you hear when the portal opens.
- Get your procedures in place before the start date, so that when you notify, the work is already done.
Every VenueReady pack includes a Responsible Person record with the details you'll need for your notification, and a reminder of the deadline.
Want it done for you? Answer one 15-minute questionnaire and we write your Standard Tier procedures, Responsible Person record, staff briefing sheet and record log, delivered within 3 working days.
General information based on the Terrorism (Protection of Premises) Act 2025 and the Home Office and SIA guidance as at 6 November 2026. Not legal advice. Official sources: SIA: Understanding Martyn's Law and ProtectUK.
More guides: all Martyn's Law guides.