Does Martyn’s Law apply to churches?
Places of worship get one specific concession, and it is not the one most people assume. Here is what it is, and what it is not.
Two beliefs are doing the rounds in parishes, and both are wrong. The first is that churches are exempt from Martyn’s Law. The second is that a large cathedral-sized congregation drags you into the heavy end of the law. Neither is true, and the truth is simpler and kinder than both.
The threshold applies to you exactly as it applies to everyone else
There is no faith exemption in this Act. A church, chapel, meeting house, mosque, synagogue, temple or gurdwara is in scope on the same test as a cinema or a conference centre: 200 or more people reasonably expected on the premises at the same time, counting clergy, staff and volunteers.
The rule, in three lines
- Fewer than 200 people reasonably expected at once — you are out of scope. This is true for every kind of premises, including churches and schools. A chapel that seats sixty is out.
- 200 to 799 — standard tier.
- 800 or more — enhanced tier, except places of worship and childcare or education settings, which stay standard tier however large they get.
Count everybody who could be there at once: the public, your volunteers, the performers, the person on the door, the ones washing up. Not tickets sold, and not the figure on your fire certificate.
So the parish church that gathers thirty on a Sunday and ninety at Christmas is out of scope. Not lightly regulated — out. That is the answer for a great many churches, and nobody should be selling you anything on the strength of a duty you do not have.
The concession you do get: you stay in the standard tier
Here is the part that matters for the large ones. Normally, 800 people or more puts a premises into the enhanced tier — a heavier regime, with a documented assessment and additional measures.
Places of worship are treated differently. The statutory guidance is explicit: places of worship that can reasonably expect 200 or more people to be present at the same time “will be in scope of the standard tier, even if that number of expected individuals is 800 or more” (para 4.37).
In plain terms: a packed cathedral at Midnight Mass is still standard tier. Your Easter, your Christmas, your big civic funeral — none of them escalate you. You have the lighter duties, and you keep them however full the building gets.
The two-sentence version
Under 200 people: Martyn’s Law does not apply to your church. 200 or more: it applies, at the standard tier — and you stay at the standard tier no matter how many people come.
What the standard tier asks of a church
Notify the regulator, and have procedures for what you would do in an emergency: getting everybody out (evacuation), bringing everybody in and shutting the doors (invacuation), securing the building against someone dangerous (lockdown), and how the alarm is raised and 999 is called (communication).
Note what is not on that list. Nothing about locking the church during the day. Nothing about searching bags, screening people, or putting a barrier across a porch that has been open to the parish for four hundred years. The duty is to think, agree, and be ready — not to stop being a church.
The things that are genuinely different about a church building
- Open access is the point. Many churches are unlocked and unstaffed for hours. The right response is not to lock the door; it is to know what the churchwarden or the person on duty would do, and to make sure that person is never alone with the question.
- The building fights you. Heavy doors that only lock with a key from the outside. A vestry with one way in. Glass you would not want to be standing under. These are worth naming honestly in your procedures rather than writing a plan that pretends the building is something it is not.
- The congregation is not a crowd of strangers. You know the people who need help down a step, and you know who would freeze. That is an advantage a stadium does not have. Use it: name a helper for each person who needs one, before the service, not during it.
- Volunteers turn over constantly, and the sidesperson on their first Sunday is exactly the person who needs to know what to do. Which is why a procedure in someone’s head is not much of a procedure.
Who is the responsible person?
Whoever is in control of the premises. In a Church of England parish that is normally the PCC, with the incumbent or a churchwarden as the named contact; in other traditions it may be the trustees, the elders, the mosque committee or the management body. Name the role, not just the person, and use a role email — people move on and notifications go stale.
If your church is one of several in a benefice or a group, the duty attaches to the premises. Four churches means four sets of answers, even if the same handful of people are answering for all of them.
Is it worth writing anything down?
The law does not make you, at the standard tier. We say that plainly even though we sell the documents.
Churches choose to anyway, for a reason peculiar to churches: you have more volunteers, turning over more often, than almost any other kind of premises in the country. The briefing sheet you hand a new sidesperson is worth more to you than the procedure it summarises. And if a bishop, an insurer, an archdeacon or a coroner ever asks what your procedures are, an adopted, dated document is a very short conversation.
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Common questions
Are churches exempt from Martyn’s Law?
No. There is no faith exemption. A place of worship is in scope on the same test as anywhere else: 200 or more people reasonably expected at the same time. Below that, it is out of scope — which is where most parish churches sit.
Our cathedral holds 1,200 at Christmas. Are we enhanced tier?
No. Places of worship remain in the standard tier even when 800 or more people are reasonably expected — the statutory guidance says so explicitly (para 4.37). You have the lighter duties whatever the size of the congregation.
Do we have to lock the church?
No. Nothing in the Act requires you to close a building that has always been open. The duty is to have procedures for what you would do in an emergency, not to restrict access.
Does a church hall count separately from the church?
The test is applied to the premises. If your church hall is a separate building with its own use and its own capacity, work out its number on its own terms — a hall that holds 220 for a wedding reception can be in scope while the church next door is not.
Where this comes from
Everything above is our plain-English reading of the following. Where we quote a paragraph number, it is from the Home Office statutory guidance. If you want the law itself rather than our summary of it, start with the first link.
- Terrorism (Protection of Premises) Act 2025 (c. 10) legislation.gov.uk The Act itself. Royal Assent 3 April 2025.
- Terrorism (Protection of Premises) Act 2025: statutory guidance GOV.UK (Home Office) Published April 2026, last updated 18 May 2026. The paragraph numbers quoted in these guides are from this document.
- Terrorism (Protection of Premises) Act 2025: overarching factsheet GOV.UK (Home Office) The short version, in the government’s own words.
- ProtectUK Counter Terrorism Policing Free guidance and free e-learning (ACT Awareness). The training is genuinely good and costs nothing.
Last reviewed . Martyn’s Law is not yet in force and the guidance is still developing — if you are reading this long after that date, check the sources above for anything newer.
This is guidance, not a legal determination. Standfast helps you think clearly and get ready. It does not decide your legal position, and nothing on this page is legal advice. If your circumstances are unusual, or a great deal turns on the answer, take advice.