Showstopper Productions in association with Suzanna Rosenthal Productions proudly presents:
THE LONDON 50-HOUR IMPROVATHON 2026
Artwork – Andrew Pugsley
THE IMPROVISED COMEDY EPIC RETURNS FOR A 16TH YEAR!
Starting 7pm on Friday 27th February and running continuously until 9pm Sunday 1st March
at Pleasance Theatre, London
Showstopper Productions and Suzanna Rosenthal Productions are excited to announce the highly-anticipated return of The London 50-Hour Improvathon, for a totally bodacious 16th year!
Perhaps the most ambitious (and least sensible) event in the London theatre calendar – this improvised comedy epic sees some of the world’s best improvisers descend on London for one hilarious, and delirious, weekend. It’s the ultimate ‘you had to be there’ event!
‘Hilarious! Like nothing else you’ve ever seen before.’
Time Out Critic’s Choice ★★★★★
Welcome to Pleasanceville. It’s 1980-something in small town America, and life seems idyllic.
But it’s not just teen diaries that hide secrets in Pleasanceville. What’s happening in the high-security government research lab in the woods? Who is the corrupt mayor covering for? And can our intrepid band of misfits save the town in time to get to prom?
The Goonies meets Twin Peaks meets Stranger Things in this totally tubular adventure!
‘It’s absolutely incredible. This isn’t theatre – it’s blood sports.’
WHATS ON STAGE ★★★★
The London 50-Hour Improvathon is split into 25 two-hour shows. Audience members can come to any individual episode (there are recaps at the start of each show so everyone knows what’s happening) or, like some of the hardcore fans, buy a ticket for the whole weekend and bring a sleeping bag! Weekend Passes sold out in record time in 2025!
Director Ali James says: “It’s like binging your favourite Netflix show for a whole weekend – but LIVE!”
The show kicks off at 7pm on Friday and plays continuously until 9pm on Sunday (yes, right through the nights!) with a live band and refreshments available throughout. There’s a relaxed performance on Saturday 28th February at 11am; a special D&D episode on Saturday 28th February at 1pm; a BSL signed performance on Saturday 28th February at 3pm; and a family episode on Sunday 1st March at 11am, suitable for all kids of all ages with concession tickets for under-12s.
‘Deserves an Improv Oscar…a rite of passage, for audience as well as actors.’
REVIEWS HUB ★★★★★
Featuring stars of Olivier Award-winning Showstopper! The Improvised Musical and Tony Award-winning Mischief alongside comedians, performers, up-and-comers and international guests throughout the weekend. The performers become increasingly sleep-deprived; they behave with a wild freedom you won’t see anywhere else!
‘You start to realise that it might be the only thing that matters in your life.’
ALL THAT DAZZLES ★★★★★
Cast and Creatives
Directors: Ali James and Adam Meggido
Producers: Showstopper Productions in association with Suzanna Rosenthal Productions
Cast:
Jonathan Ainscough
Seamus Allen
Alex Bartram
Ruth Bratt
Justin Brett
Joseph Chance
Julie Clare
Charlotte Clitherow
Belinda Cornish
Alan Cox
Josh Darcy
Dylan Emery
William Ewart
Sal Fadhley
Helen Foster
Andrew Gentilli
Fred Gray
Susan Harrison
Sally Hodgkiss
Joshua Jackson
Ali James
Kimane Juneau
Harry Kershaw
Safia Lamrani
Tristan Langlois
Ria Lina
Jinni Lyons
Alexander McWilliam
Chris Mead
Mark Meer
Adam Meggido
Nell Mooney
Alicia Mugford
Nadia Nadif
Jon Nguyen
John Oakes
Ethan Pascal Peters
Talia Pick
Andrew Pugsley
Eleanor Rattenbury
Briony Redman
Charlie Russell
Katy Schutte
Oliver Senton
Lee Simpson
Mandeep Singh
Luke Sorba
Dan Starkey
Lucy Trodd
Phil Whelans
Sarah-Louise Young
Title: The London 50-Hour Improvathon
Dates: Friday 27th February to Sunday 1st March 2026
Venue: Pleasance Theatre, London
Ticket Link: https://www.pleasance.co.uk/event/london-50-hour-improvathon
Running Time: 1 hour 45 minutes
The event starts at 7pm on Friday 27th February and runs continuously until 9pm on Sunday 1st March. There are 25 episodes across the event, starting at odd hours. Each runs for 1 hour 45 minutes, with a 15 minute break before the next episode starts.
Age Recommendation: 12+
Not including the family episode.
