Martyn’s Law for Wedding Venues: What You Need to Do
TL;DR
Wedding venues with 200 to 799 people on site at once (day guests, evening guests, the couple’s suppliers, and your own team) fall under Martyn’s Law standard tier. Above 800 you’re into enhanced tier instead. The guest list is never the number that matters: a 150-guest wedding with evening arrivals, a band, a photographer and your staff clears 200 comfortably. Your busiest moment is usually late evening, not the ceremony. And unlike almost every other venue type, your client has done this once in their life, so nobody is sharing the load with you. Below: how to count, what actually catches wedding venues out, and a worked example.
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Most wedding venues already run a tight day, because a wedding leaves no room for a second attempt: a function sheet, a timeline, someone coordinating suppliers, fire exits checked for the licence. Martyn’s Law adds the bits that planning doesn’t cover: sheltering people inside if the danger is outside, securing the entrances you’d usually leave open for evening arrivals, and a way of telling a room full of guests what to do that doesn’t rely on the fire alarm.
The awkward part is who’s in the building. By ten o’clock it’s full of people who arrived an hour ago, are dressed for a party, have been drinking since the reception, and have never looked at a fire exit in their lives. And the one person who could share the planning has never done this before, so whatever gets planned, you plan it. The rest of this guide is about making procedures hold up in that room, starting with the number everything else hangs off.
Does Martyn's Law Apply to Wedding Venues?
Yes. Wedding Venues fall under Halls etc. (Schedule 1, paragraph 6) of the Terrorism (Protection of Premises) Act 2025, which applies once 200 or more people, including staff, volunteers, and contractors, are regularly expected on site at the same time. If your wedding venue expects between 200 and 799 people at once, it qualifies as a standard tier premises. At 800 or more, you're into enhanced tier instead, which carries a heavier set of duties.
Standard tier means two duties: notify the SIA that you are a qualifying premises, and put public protection procedures in place covering evacuation, invacuation, lockdown, and communication.
No physical alterations. No equipment to buy. No consultants to hire.
How to Work Out Your Wedding venue Capacity
Count everyone on site at the same moment, not the number on the invitations. That means day guests, evening guests, the band or DJ, the photographer and videographer, florists, external caterers, a toastmaster if there is one, your own staff and volunteers behind the bar and in the kitchen, and anyone staying overnight if you have rooms. A wedding sold as “150 guests” routinely puts 220 people in the building.
Your peak is probably not the ceremony. Where evening-only invitations are common, the busiest moment comes after the first dance, when the day guests haven’t gone home yet and the evening guests have all arrived. Work out your number against that hour, not against the seating plan.
Gardens, terraces, courtyards and a marquee on your own land count as part of the premises. The Home Office guidance treats land that forms part of the premises and is used with it as part of the premises, and its own example is a pub with a beer garden. If your drinks reception puts 200 people on the lawn, those people count.
If you run more than one thing at once (two ceremonies on a Saturday, or a wedding alongside a hotel’s normal trade), the question is how many people are in the building, not how many are at any one event.
Not sure where you fall? Use our free capacity calculator to work it out.
Key Challenges for Wedding Venues
Most Wedding Venues hit the same handful of problems with Martyn's Law, and they come from how the building works rather than from the Act itself. These are the ones that come up most often:
Your client has done this once
Every other venue type hands part of the job to a professional. An exhibition has an organiser, a conference has a planner, a gig has a promoter. A wedding has a couple who booked you eighteen months ago and have thought about the flowers rather more than the fire exits. Nobody is going to raise procedures with you, so put them in the hire agreement and cover them at the final planning meeting. If the couple has hired a wedding planner or a toastmaster, that person is genuinely useful: they’re the one voice the room already listens to.
Guests who have never been in the building
At a wedding, almost everybody is a first-time visitor. They came in through the front, they know where the bar is, and that’s the extent of it. Several have been drinking since noon, some are elderly, some are children, and a few are in shoes they can’t run in. This crowd won’t work out a route by itself. But it will do exactly what a confident person tells it to do, which puts the weight on your staff and volunteers knowing the answer without having to think.
The crowd moves all day
Ceremony room at two, lawn at three, dining room at five, dance floor at nine. Where your 200 people are at the start of the day is not where they are at the end of it, and the nearest exit changes with them. Walk each phase separately and work out the route from each one. The quickest way out of the ceremony barn is not the quickest way out of the marquee it opens onto.
Suppliers who work for you for one day and aren’t your staff
The band, the photographer, the external caterers and the cake maker turn up on the morning, park round the back, and spend twelve hours in your building. None of them are your employees and none of them will sit through a training session. What works is a short supplier information sheet with the exits, the shelter areas, and what happens if they hear an announcement. One page, sent with the booking confirmation.
Lockdown at a party
A wedding is welcoming by design. Doors propped open in July, guests wandering out for a phone call, taxis coming up the drive all evening. Securing that is a different exercise from securing a shop at closing time. Work out which doors actually lock, who is holding the keys or fobs at eleven at night, and what happens if the person who had them finished their shift at six. If you’re down a long drive, the gate is not the same problem as the front door, and you should decide in advance which one matters.
Worked Example: Wedding venue Procedures
A converted barn wedding venue on a working farm: a ceremony barn, an adjoining dining barn with glazed doors onto a walled garden, a bar, a summer marquee on the lawn, six letting bedrooms in the farmhouse, and a gravel car park at the end of a 200-metre drive. Peak capacity 260.
| Procedure | Implementation |
|---|---|
| Capacity | 260 (150 day guests + 60 evening guests + 20 suppliers including the band and photographer + 20 venue staff and volunteers + 10 guests staying in the farmhouse) |
| Evacuation | Ceremony barn to the main doors and the side fire exit; dining barn through the glazed doors to the walled garden and out through the garden gate; marquee by dropping the sides on any face; bar through the service door. Assembly point at the top of the car park, away from the drive so arriving vehicles don’t block it. The duty coordinator sweeps the toilets and the farmhouse, which is the part everyone forgets, because guests staying over may be in their rooms. |
| Invacuation | The walled garden looks like shelter and isn’t: it’s open above and has one gate. The farmhouse is the best option, with solid walls, small windows and lockable rooms. The cellar and the dry store behind the bar work for smaller numbers. The dining barn’s glazed doors make it the worst room to shelter in, so the move is out of the barn and into the farmhouse. |
| Lockdown | Gate at the top of the drive closed by whoever is nearest a vehicle; barn doors barred from inside; bar shutter down; farmhouse front and back doors locked; marquee left empty because it can’t be secured. Keys and gate fob held by the duty manager, with a second set in the office that the bar supervisor can reach. Announcement to stay inside and away from the glazed doors. |
| Communication | There’s no PA in most barns, and the loudest thing in the building is the band or the DJ. Agree a phrase with them at the sound check so they can cut the music and hand over the microphone without a conversation about it first. Venue staff on radios or a group chat, whichever you already use. The toastmaster, if there is one, is the person the room is used to obeying. Duty manager calls 999 and meets the emergency services at the top of the drive, because the drive is long and the entrance is easy to miss. |
| Training | Permanent staff covered at induction and refreshed at the start of the wedding season. Casual and agency staff get two minutes at the pre-service briefing you already run: where the exits are, where the shelter areas are, who is in charge tonight. Suppliers get the one-page sheet with the booking confirmation. The couple, and their planner if they have one, hear it at the final planning meeting alongside the timings and the table plan. |
This is one example. Your procedures should reflect your specific building, layout, and circumstances. Read our full guide to public protection procedures for a detailed breakdown of what to include. To see how procedures like these come together on paper, read our complete example document for a 300-capacity pub.
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Take the free 60-second readiness checkStaff Training for Wedding Venues
Wedding staffing turns over constantly, so an annual training day is the wrong shape for this. The briefing before service is the right one. You probably already gather everyone to run through timings, and two minutes on exits and shelter areas at the end of it does the job.
Nobody expects you to train the guests, and you shouldn’t try. Guests need to hear a clear instruction and follow it. Your staff and volunteers are the ones who need to know what that instruction is.
The band or the DJ holds the only microphone in the room, which makes them more important to your communication procedure than their booking suggests. Thirty seconds at the sound check settles it: this is the phrase, this is what happens when you hear it.
The free ACT Awareness e-learning (45 minutes) is a good baseline for anyone who wants to go further. It covers recognising threats, suspicious items, and what to do during an attack.
Quick Checklist
- Work out your peak number across a full wedding day (day guests + evening guests + suppliers + staff and volunteers + anyone staying over)
- Check the number against your busiest hour, which is usually the evening rather than the ceremony
- Include the lawn, terrace, courtyard and marquee in the count, because land you use with the building is part of the premises
- Map exit routes from each phase of the day separately: ceremony room, reception space, dining room, dance floor
- Identify shelter areas with solid walls, and be honest about which rooms are glass boxes
- List every door and gate, and confirm who physically holds the keys or fobs late in the evening
- Write a one-page supplier sheet and send it with the booking confirmation
- Agree a cut-the-music phrase with the band or DJ at the sound check
- Add procedures to the hire agreement and raise them at the final planning meeting with the couple
Getting Started
Compliance is not complicated. Here is what to do:
- Work out your capacity (try our free calculator). Under 200? You are not in scope.
- Write procedures for evacuation, invacuation, lockdown, and communication tailored to your wedding venue.
- Make sure your staff and volunteers know the procedures. Brief them, put up posters, hand out one-page summaries.
- Keep records of what you have done and who has been briefed.
- Review at least once a year.
You can do this yourself, or use Standard Tier to document your procedures in 10 minutes, set up a training portal your staff and volunteers can access on their phones whenever it suits them, and keep a digital audit trail without chasing signatures or filing paperwork.
30-day free trial · No card required · £18/month (usually £38), unlimited staff and volunteers after that
Frequently Asked Questions
Does Martyn’s Law apply to my wedding venue right now?
The threat level is severe. Do we need to tell couples, or change how weddings run?
Our biggest wedding is 180 guests. Are we in scope?
Who is the responsible person, us or the couple?
We’re a barn on a working farm. Does the farm change anything?
Do we have to buy anything, or lock the venue down like an airport?
What if we host something much bigger than a wedding?
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Standard Tier (2026). Martyn’s Law for Wedding Venues: What You Need to Do. Available at: https://www.standardtier.co.uk/guide/martyns-law-for-wedding-venues
Last reviewed: 29 August 2026. Based on the Act, the Home Office statutory guidance published on 15 April 2026, and the Home Office factsheets. Requirements may be refined as the SIA finalises its guidance.
This guide is general information about the Terrorism (Protection of Premises) Act 2025, not legal advice. Duties under the Act rest on the responsible person for each venue and cannot be transferred. If you're unsure how a specific requirement applies to your premises, take advice from a solicitor or qualified security adviser before acting on anything you read here.
Standard Tier is an independent platform and is not affiliated with the UK Home Office, the SIA, or any government body.