The current run of The 39 Steps debuted in Leeds in June 2005, hitting London at the Tricycle theatre in August 2007 and moved swiftly to the West End at the Criterion Theatre just a month later - where it has stayed ever since - and is destined to stay until at least February 2010.

The play, based on John Buchan's classic book has been adapted by English actor, comedian and playwright, Patrick Barlow and has picked-up numerous awards, including an Olivier award for Best New Comedy in 2007. The story was adapted for film in 1935 by Alfred Hitchcock, featuring Robert Donat and Madeleine Carroll.

The cast features just four actors: Nigel Betts, Tessa Churchard, Alan Perrin and Robert Portal - playing between them no less than one hundred and thirty nine roles during one hundred minutes of ingenious fun.

Top priced tickets (usually £45) are available for all performances except Saturday evenings until 31st August at just £19.50 + booking.