Musicals
Plays
West End
Off-West End
Family Friendly
Comedy
Award Winners
New Shows
PlaysNow booking
The Mousetrap
St Martin's Theatre, LondonOpen-ended West End run at St Martin’s Theatre, now booking into its 75th yearAbout 2 hours 5 minutes, including a 20 minute interval7+ (under 16s must sit with an adult aged 18 or over; under 5s not admitted)4.61,103 reviews
Official tickets · Secure checkout · Mobile e-tickets · 24/7 support
Open-ended West End run at St Martin’s Theatre, now booking into its 75th yearAbout 2 hours 5 minutes, including a 20 minute interval7+ (under 16s must sit with an adult aged 18 or over; under 5s not admitted)
Running time
About 2 hours 5 minutes, including a 20 minute interval
Age guidance
7+ (under 16s must sit with an adult aged 18 or over; under 5s not admitted)
Venue
St Martin's Theatre, London
Category
Plays
Ratings & Reviews
British Theatre has covered The Mousetrap in 15 articles since 2015.
About the show
Book The Mousetrap at St Martin’s Theatre: the longest-running play in the world. About 2 hours 5 minutes including interval. Official seats on British Theatre.
Book The Mousetrap tickets in London
The Mousetrap is the longest-running play in the world at St Martin’s Theatre, Agatha Christie’s classic whodunnit still packing the West Street house night after night. Choose your date and official seats on the The Mousetrap tickets page on British Theatre.
A snowbound guest house, a murder, and a cast of strangers who may not be who they seem: the suspense still lands for first-timers and return visitors. Keep the ending to yourself. That is part of the tradition.
What a Mousetrap evening at St Martin’s Theatre feels like
Plan for about 2 hours 5 minutes, including a 20 minute interval. Expect a classic drawing-room mystery, sharp dialogue, and a final twist the company asks you not to spoil. St Martin’s Theatre sits on West Street by Cambridge Circus, a short walk from Leicester Square and Covent Garden, with plenty of pre-theatre options nearby. Arrive on time: missing the opening scenes means missing vital clues.
How to book The Mousetrap tickets on British Theatre
Pick a performance, compare seats for St Martin’s Theatre, then book through The Mousetrap on British Theatre. Stalls put you close to the action. The Circle often gives a clear view of the full set. The current company is led by Saranna Parlone as Mollie Ralston and Ben Riddle as Giles Ralston, directed by Denise Silvey. Casting can change, so check the listing for the night you want.
Practical tips for The Mousetrap at St Martin’s Theatre
There is no formal dress code. Smart casual is typical. Leave time for West Street crowds and the theatre foyers. Outside food and drink are not usually allowed in the auditorium. Phones off once the show starts, and no photography during the performance. Latecomers are admitted at a suitable break, but arriving late to a mystery is a genuine risk.
Why you will love The Mousetrap at St Martin’s
- See the longest-running play in the world live in the West End
- Enjoy Agatha Christie’s landmark whodunnit with a live company
- Join the tradition of keeping the murderer a secret
- Book official The Mousetrap tickets with live availability
If you want another London night out, see The Phantom of the Opera or Hamilton. For venue details and travel, start with the St Martin’s Theatre guide.
Good to know about The Mousetrap at St Martin’s Theatre
Age guidance
Recommended for ages 7 and above. Children under 5 are not admitted. Under 16s must be accompanied by, and sit next to, an adult aged 18 or over. Everyone needs their own ticket.
Running time
About 2 hours 5 minutes, including a 20 minute interval.
Seating at St Martin’s Theatre
The St Martin’s Theatre is an intimate West End house. Compare stalls and circle options on the The Mousetrap page before you book.
Performance schedule
Evenings: 7.30pm Monday to Saturday
Matinees: 3.00pm Tuesday
Thursday and Saturday
From 9 November 2026: evenings 7.30pm Monday
Wednesday
Friday and Saturday
and 7.00pm Tuesday and Thursday; matinees 3.00pm Wednesday
Friday and Saturday
Cast & Creatives
Full cast & creativesWho is in The Mousetrap London cast?
The current London cast features Saranna Parlone as Mollie Ralston, Ben Riddle as Giles Ralston, Stefan Chanyaem as Christopher Wren, Joanne Henry as Mrs Boyle, James Staddon as Major Metcalf, Anna Rawlings as Miss Casewell, Dugald Bruce-Lockhart as Mr Paravicini, and Ben Galvin as Detective Sergeant Trotter.
Who are the understudies?
Understudies are Barnaby Jago (Giles Ralston and Detective Sergeant Trotter), Richard Parnwell (Christopher Wren and Detective Sergeant Trotter), Nancy Doubledee (Mollie Ralston and Miss Casewell), Clive Marlowe (Major Metcalf and Mr Paravicini) and Bella Farr (Mrs Boyle). Paddy Duff is emergency cover for Detective Sergeant Trotter, Giles Ralston and Christopher Wren.
Who directs The Mousetrap?
The Mousetrap is directed by Denise Silvey, with casting by Ellie Collyer-Bristow CDG, assistant direction by Richard Parnwell, sound design by Max Perryment and fight direction by Philip D’Orleans. Janet Hudson-Holt is associate costume designer and head of wardrobe, and Caroline Hannam is costume supervisor. The producer is Brian Fenty, with Julia Salkin as associate producer.
What records has The Mousetrap broken?
The Mousetrap holds the Guinness World Record for the longest theatrical run in history. In March 2025, it celebrated its 30,000th performance in London. It has been the longest-running show in the West End since September 1957. Over 400 actors have played the eight roles since 1952, and the original run featured Richard Attenborough as Detective Sergeant Trotter.
Frequently asked questions
What age is The Mousetrap suitable for?
The Mousetrap is recommended for ages 7 and above. Children under 5 will not be admitted. Under 16s must be accompanied by, and sit next to, a ticket holder aged 18 or over at St Martin’s Theatre. Everyone needs their own ticket.
How long is The Mousetrap?
The performance runs for approximately 2 hours 5 minutes, including a 20 minute interval.
Who is in the cast of The Mousetrap?
The current London cast features Saranna Parlone as Mollie Ralston, Ben Riddle as Giles Ralston, Stefan Chanyaem as Christopher Wren, Joanne Henry as Mrs Boyle, James Staddon as Major Metcalf, Anna Rawlings as Miss Casewell, Dugald Bruce-Lockhart as Mr Paravicini, and Ben Galvin as Detective Sergeant Trotter.
Who directs The Mousetrap?
The Mousetrap is directed by Denise Silvey and produced by Brian Fenty.
Is there a tradition at The Mousetrap?
Yes. At the end of each performance, the cast asks the audience to keep the identity of the murderer a secret. This tradition has been maintained for more than 70 years.
Where is The Mousetrap playing in London?
The Mousetrap plays at St Martin’s Theatre on West Street in the West End, near Cambridge Circus and Leicester Square.
Are The Mousetrap tickets on sale on British Theatre?
Yes. Official The Mousetrap tickets for St Martin’s Theatre are on sale on British Theatre. Choose your date and seats on The Mousetrap show page.
Cancellation policy. These tickets cannot be cancelled or rescheduled.
Venue
St Martin's Theatre, London
Tube
Leicester Square
Train
Charing Cross
Bus
14, 19, 22, 24, 29, 38, 40, 176
Parking
MasterPark Cambridge Circus. NCP Upper St Martins Lane, Bedfordbury. Soho, Chinatown (Q Park scheme).
You might also like
View all
Harry Potter and the Cursed Child
Palace Theatre, London
One-part from 9 October 2026; booking through 27 June 2027 at the Palace Theatre
Stranger Things: The First Shadow
Phoenix Theatre, London
Final performance 27 December 2026 at the Phoenix Theatre
Related articles
All articles about this show
News
The Mousetrap gets a new West End cast and a refreshed St Martin's for its 75th year
The Mousetrap has a new West End cast and director from 11 November 2026, plus a refurbished St Martin's Theatre, as it enters its 75th year.
Daphne
News & Reviews
Regional Theatre
The Mousetrap 75th anniversary UK and Ireland tour: dates and cast
Agatha Christie's The Mousetrap is on a 75th anniversary tour of the UK and Ireland until July 2027, including Manchester Opera House from 26 to 31 October 2…
Bridget
News & Reviews
News
Between The Covers Live! UK Tour Celebrates Agatha Christie with Star-Studded Guest Line-Up
The hit BBC book club show heads on a UK tour celebrating Agatha Christie, with special guests including Rob Rinder and Nigel Havers joining Ben Miller and L…
Susan Novak
News & Reviews
News
The Mousetrap: The World's Longest-Running Play
The Mousetrap at St Martin's Theatre: a guide to the world's longest-running play, the story, the seating at St Martin's and what visitors need to know.
D
Daniel Osei
News & Reviews
West End
Magical Merlin Returns to the West End for Autumn Half-Term 2025
Magical Merlin returns to London’s West End for a limited half-term run at St. Martin’s Theatre from 27 October to 2 November 2025.
J
Julia Jordan
News & Reviews
News
The Mousetrap London announces new cast from 20 November
Agatha Christie's The Mousetrap has announced new cast members for London's long running iconic thriller at St Martin's Theatre.
Douglas Mayo
News & Reviews
from £30
The Mousetrap