Fits on paper
Nothing on this record blocks a 120-guest seated evening, but nothing has drawn the room at that size either.
15 questions are still open, and the only capacity figure is the venue's own. Unknown is not a pass.
Checked against 120 guests, seated. Change your event
Worth checking first
Nothing blocks this room on the current record, but these items are worth confirming before you commit. Each one carries the question that would close it.
- Check this 1: Check this01
Only a published seated figure sizes this room
120 guests against a published seated figure of 600, read off the venue's own pages and never drawn. Posted figures are marketing artifacts until a layout proves them, so this room is not sized for your headcount — it is unmeasured.
Ask Ask for a drawn layout at your exact headcount, with service aisles and egress paths shown.
What would have to change
Nothing blocks this room on paper, but the only figure sizing it is one the venue publishes. A drawn layout at your headcount would clear the caution.
None of this is a judgment on the venue. It is a statement about the record as it stands today — most of these are one phone call away from being answered, and the answers would change the reading.
What is known
Everything below comes from a source I can show you, with the date I read it. Most of it is what the venue says about itself, so treat it as a starting point and confirm what matters in writing.
How many people
Figure: Seated
Seats up to 600
“Theatre 600”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Figure: Standing
Up to 400 standing
“Reception 400”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Figure: Headline capacity
A headline capacity of 300
“up to 300 guests”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Food and drink
Yes: Kitchen on site
“commercial kitchen”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Yes: Licensed to serve alcohol
“licensed bar”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
No: Outside caterers are allowed
“Bring your own caterer”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Catering rules
“Preferred caterer”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Kitchen
“Commercial kitchen”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Bar
“Alcohol service”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Bringing your own drinks
“Corkage”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Kitchen
“Commercial kitchen”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Music, noise and end time
In their words: End time and noise
“Amplified sound”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Getting around and accessibility
Yes: Step-free route for guests
“Wheelchair accessible”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Yes: Accessible restroom
“Accessible toilets”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Access route
“Wheelchair”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Hearing access
“Hearing loop”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Accessible restrooms
“Accessible toilets”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Restrooms
“Toilets”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Price
In their words: Published price
“Hire fee”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Setup and timing
In their words: Event coordinator
“Event manager”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Event service staff
“Service staff”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: How far ahead to book
“12 months in advance”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Decoration rules
“Candles”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Facilities
Yes: In-house sound and screens
“in-house AV”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Sound and screens
“Audio-visual”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Wi-Fi
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Sound and screens
“Audio-visual”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Wi-Fi
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Green room
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
In their words: Lighting infrastructure
“Lighting system”
Venue-published · The venue’s website says · stmarysmarylebone.co.uk · read Oct 2026
Questions to ask before you book
Ask for the answers in writing. A friendly yes on the phone rarely survives a change of staff, and these are the things that usually come up after a deposit is paid.
Verify on siteField protocol · 6 open
Walk in operating order
Do not tour the venue as a sequence of attractive rooms. Walk the event: arrival, access, exact layout, peak service, production, fallback and commercial close. The questions below are the unresolved parts of this record placed into that order.
Four things to leave with
- Measure geometry that changes the plan.
- Photograph routes, thresholds and technical positions.
- Obtain the current document or itemized quote.
- Name the owner and deadline for every open answer.
01 Arrival & access
The event starts before the room and accessibility is a continuous chain, not an entrance feature.
- Arrival & access question 1. Ask for a drawn layout at your exact headcount, with service aisles and egress paths shown.
Capture Photograph the route from set-down to the room and restroom. Measure any narrow, steep or ambiguous point and name every level change.
03 Service & guest flow
The empty room can work while peak service creates crossings, queues and missing holding space.
- Service & guest flow question 1. Ask who holds the licence for a private event, and what the last-service time is on your date.
Capture Walk food, beverage, clearing, waste and guest queues at their busiest moment. Photograph holding and storage space, not just front-of-house finishes.
04 Production & load-in
A room that says it has AV or power may still be unable to carry the actual show file or supplier path.
- Production & load-in question 1. Ask for the distribution board rating, the position of outlets, and whether any point is rated for rigging.
- Production & load-in question 2. Ask for the amplified-sound cutoff in writing, and who enforces it on the night.
Capture Photograph the load path and technical positions. Obtain current power, rigging, network and house-AV specifications and identify the technical owner.
05 Fallback & operating limits
Weather and stop rules become expensive when they appear after design, entertainment or vendor commitments.
- Fallback & operating limits question 1. Ask what the wet-weather plan seats, who calls it, and by what hour the call must be made.
Capture Write the trigger, decision owner and deadline for every contingency or restriction. Get the applicable policy or contract clause, not a verbal summary.
06 Commercial close
A site visit is useful only if observations become evidence the decision can carry forward.
- Commercial close question 1. Ask for the exact number of spaces held for a private event, and what happens when they are full.
Capture For every unresolved point, leave with one named next proof: a measurement, photograph, document, itemized quote or written answer with an owner and due date.
6 written answers outstanding for St Mary's Marylebone (Venue Hire). Nothing is ticked off here: the visit creates evidence, but this panel confirms no availability, suitability, accessibility, compliance or pricing by itself.
Sources
- stmarysmarylebone.co.uk · read Oct 2026
- stmarysmarylebone.co.uk · read Oct 2026
- stmarysmarylebone.co.uk · read Oct 2026
- stmarysmarylebone.co.uk · read Oct 2026
- stmarysmarylebone.co.uk · read Oct 2026
- stmarysmarylebone.co.uk · read Oct 2026
- stmarysmarylebone.co.uk · read Oct 2026
This page helps you prepare. It does not check availability, quote a price or confirm that a venue meets any legal requirement, so confirm the details with the venue before you pay anything.