The 10th Annual London 50 Hour Improvathon!

20th January to 22nd January . Runs for 50 hours, each episode starting every 2 hrs! .
50-Hour Pass £65 · Single Episode £10 (£7 for every subsequent episode available on the day in person at the box office)

One throne to rule them all. Fifty hours to find it!

Tolkien meets George RR Martin in this hilarious improvised comedy soap opera in 25 episodes, running continuously and overnight across an entire weekend.

The annual marathon stars some of the funniest performers from the UK and overseas. With many going without sleep for 50 hours, this is theatre at its most exciting and unpredictable.

There will be live music throughout and an all-night bar. Drop in for one episode, a few, or join the party and stay for the whole thing!

Directed by Adam Meggido, Olivier Award winner with The Showstoppers and director of West End hit Peter Pan Goes Wrong.

Recommended age 16+

Family Show
Don't miss our special ‘Family Episode’ (Sunday 11am to 1pm) where the action is suitable for all ages.

The Improvathon is supported by Rich Energy

The Showstoppers in association with Extempore Theatre and Something for the Weekend.

Photography by Russ Hewitt, Sheldon Elter and Ryan Parker.

The London Jam & The Improvathon can both be found at:

They like it

  • Absolutely incredible. This isn’t theatre – it's blood sports!

    ****. WhatsOnStage

  • Hilarious! Like nothing you’ve ever seen before. Late night clubbers and early morning joggers unite!

    Time Out Critics' Choice

  • Refreshments

    This event runs in 2 hour episodes with each episode lasting 1hr 40mins, giving you (and the cast) the chance for a 20 minute refreshment break.

    The Mahogany Bar will be open and serving throughout the 50 hours.
    Call the box office for information on food. 

Your cart  
Check Out Log In