How-To Guide

How to Prepare a Martyn's Law Public Protection Risk Assessment

Step-by-step guide to preparing a public protection risk assessment under the Terrorism Protection of Premises Act 2025 (Martyn's Law) before commencement in 2027.

Estimated time: 4 hours

The Terrorism Protection of Premises Act 2025 (Martyn's Law) places legal public protection duties on those responsible for qualifying premises and events. A public protection risk assessment is the foundation of compliance: identify the threats, evaluate the venue's vulnerability, and document reasonably practicable steps to reduce harm. Standard tier (capacity 200 to 799) requires the assessment in proportionate form. Enhanced tier (800+) requires documented measures, training, and evaluation against the four legal pillars.

7 steps to complete

1

Determine your tier

Calculate full-use capacity (staff, visitors, contractors at the same time). 200 to 799 is standard tier. 800 or more is enhanced tier. Document the calculation and the tier.

2

Designate a senior individual

Identify a named individual responsible for Martyn's Law compliance. For enhanced tier this is a legal requirement; for standard tier it is best practice.

3

Identify the threats

Cover the attack types relevant to UK venues: vehicle ramming attacks (where vehicle access permits), edged weapons, firearms, IEDs, and marauding terrorist attacks (MTAs). Use the Government's Counter Terrorism Security Office (CTSO) guidance and the Crowded Places Guidance for details.

4

Evaluate the venue against each threat

Walk the venue with the threat in mind. Where could a vehicle attack approach? Where would an attacker enter? What protected internal areas exist? How would communication work? Engage your local CTSA (Counter Terrorism Security Advisor) - the contact is via the local police force.

5

Document reasonably practicable measures

For each identified threat, document the public protection measures across the four legal pillars: evacuation, invacuation, lockdown, and communication. Reasonably practicable means proportionate to the venue, the threat, and the cost of measures.

6

Document staff training

For enhanced tier, training is a legal requirement. Document who needs training, what it covers, and the refresh schedule. Common content: ACT (Action Counters Terrorism) e-learning, See Check and Notify (SCaN), venue-specific procedures.

7

Set the review schedule

Review the assessment annually and after any material change (capacity, layout, security infrastructure, incidents). Document the review and any updates.

Tips for success

Engage your CTSA early. Their walkthrough materially improves the assessment and the relationship.
Use the ProtectUK platform (protectuk.police.uk) for guidance, e-learning, and templates.
Treat Martyn's Law as connected to your existing emergency procedures (fire, medical, dispersal) rather than separate.
Document everything. The SIA as regulator will expect to see procedures, training records, and review evidence.

Common mistakes to avoid

Calculating capacity using licensed capacity only
Martyn's Law capacity includes staff and contractors. Recalculate full-use capacity for the tier assessment.
Treating the assessment as a one-off document
Annual review is a legal requirement at enhanced tier and best practice at standard tier. Build it into the operational calendar.
Skipping training documentation
For enhanced tier, training records are critical regulator evidence. Capture training type, date, attendees, and refresher schedule.

Frequently asked questions

When does Martyn's Law take effect?

The Act received Royal Assent on 3 April 2025. Commencement is expected to be April 2027, with a 24-month implementation window.

What's the difference between standard and enhanced tier?

Standard tier (200 to 799 capacity) requires reasonably practicable public protection procedures and regulator notification. Enhanced tier (800+) adds documented measures, staff training, regular evaluation, and a designated senior individual.

Do I need a CTSA assessment?

Not legally, but a Counter Terrorism Security Advisor walkthrough materially improves the risk assessment and is best practice. Contact via your local police force.

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