Mathew Horne – who played Gavin in Gavin & Stacey – will star in a stage adaptation of the Oscar-winning film Rain Man.
Horne will play the role of Raymond Babbit, opposite Ed Speleers (Downton Abbey, Wolf Hall) as Charlie Babbit.
It opens at Windsor Theatre Royal on August 21, before embarking on a UK tour to Milton Keynes, Cardiff, Eastbourne, Southend, Edinburgh, Cambridge, Brighton, Guildford, Leeds, Richmond, Derby and Northampton.
Further dates and casting to be announced in due course.
As well as Gavin & Stacey, Horne starred in The Catherine Tate Show, and Jack Whitehall’s Bad Education.
His most recent West End stage credit was The Miser opposite Griff Rhys Jones and Lee Mack.
Speleers starred as Jimmy Kent in Downton Abbey and is to join the cast of Outlander.
Rain Man tells the story of salesman Charlie Babbitt who discovers that his long-lost brother Raymond – an autistic savant with a genius for numbers – has inherited the family fortune.
The brothers embark on a trip across the US, and Charlie discovers that Raymond is worth more than he could have ever imagined.
It is inspired by the film, which starred Tom Cruise and Dustin Hoffman and won Oscars for Best Picture, Best Screenplay, Best Director and Best Actor.