Free tier checker · 30 seconds

Find your Martyn's Law tier

Answer three questions to see whether your premises are likely to be in scope of the Terrorism (Protection of Premises) Act 2025 - and what you'd need to do before its main duties come into force, expected in spring 2027.

1. What kind of venue is it? Please choose your venue type. 2. The most people reasonably expected there at the same time - including staff Please enter a whole number.

How do I work this out?

Use the busiest realistic moment, not your average. The Home Office suggests methods such as:

The maximum occupancy in your fire risk assessment
A capacity limit on your premises licence or safety certificate
Your fixed seats plus standing areas
Your busiest day on record - tills, door counts or bookings
The maximum tickets or registrations you issue

Always include staff, and write down which method you used.

3. A couple of quick checks

Is there a building on the site? YesNo

Is it open to the public, customers or members? This only matters for shops, food and drink, leisure, halls, libraries, museums and public buildings. YesNo

General guidance based on GOV.UK, not legal advice. We keep anonymous counts of results; your email is only stored if you ask us to send your result.

Your result will appear here Standard tier, enhanced tier or out of scope - with what it means for you.

Timeline

Where things stand

3 April 2025
The Terrorism (Protection of Premises) Act 2025 receives Royal Assent.
April to October 2026
The statutory guidance (April) and the SIA's guidance powers (June) come into force, and regulations set the notification rules (July) and how to decide a building's principal use (October).
Autumn 2026
The SIA publishes its final guidance and consultation report.
Early 2027 (planned)
The SIA invites volunteers to test its notification portal before launch.
Spring 2027 (expected)
The main duties are expected to come into force, after an implementation period of at least 24 months.
Within 3 months of commencement
Existing qualifying premises must notify the SIA (set by the Notification Requirements Regulations 2026).

Sources: Understanding Martyn's Law and the SIA's role as regulator - GOV.UK; Terrorism (Protection of Premises) Act 2025: statutory guidance - GOV.UK; Terrorism (Protection of Premises) Act 2025: factsheets - GOV.UK; Notification requirement guidance - GOV.UK. Checked 15 October 2026.