Place of worship security in the UK: Martyn's Law and what to actually do

The position places of worship are in

The 2026 UK Martyn's Law Readiness Index puts places of worship in the lowest readiness band of any sector. Awareness of the obligations is low. Documented procedures are rare. Active monitoring is almost absent. The April 2027 enforcement window arrives faster than many congregations realise.

This is not a criticism of the sector. Places of worship in the UK have historically operated on volunteer goodwill, modest budgets, and a strong sense of welcome that sits in tension with formal security measures. The challenge is making the law fit that context rather than ignoring it.

What the law actually asks for

If your place of worship has a capacity of 200 or more people, you are in scope under Standard Tier. If 800 or more, you are in scope under Enhanced Tier. Capacity is the physical limit, not the average attendance. A church that holds 300 at Christmas but typically sees 80 on a Sunday is still in scope.

Standard Tier requires four things:

• Notification to the SIA
• A named Responsible Person accountable for compliance
• Documented public protection procedures (Evacuate, Invacuate, Lockdown, Communicate)
• Staff and volunteer training on those procedures

Enhanced Tier adds a formal terrorism risk assessment, a documented security plan to the SIA, a Designated Senior Individual, and reasonably practicable protective measures.

What it does not ask for

The Act does not require places of worship to install metal detectors, hire security guards, or change the experience of attending worship. The duty is to take reasonably practicable steps proportionate to the venue.

For most places of worship, "proportionate" means documented procedures, trained volunteers, considered building access at events, and a communication plan with local police. It does not mean turning your community space into a fortress.

What active monitoring looks like in a sensitive context

For places of worship that already have CCTV, the cleanest path is to add AI behaviour detection as an active layer that runs invisibly. No facial recognition. No surveillance of worshippers in any meaningful sense. Detection focused on the perimeter approach, the entrance pre-service, and the immediate vicinity of the building during events.

The detection layers that matter most in this context are perimeter approach during services, unattended items in entry areas, and pre-conflict aggression in lobby and entrance zones. The system stays out of the worship space itself in most deployments.

How to start

The Home Office and ProtectUK have specific guidance for places of worship. Start there. The Counter Terrorism Security Adviser (CTSA) network includes specialists who work with religious buildings and will provide free guidance.

If you are looking at the active monitoring layer specifically, book a discovery call. We will walk through what deployment looks like in a place of worship context with the sensitivity the setting deserves.