All Mouth, which is set in London's Soho and is described as a "wry eavesdrop" on the people who produce voiceovers for the advertising industry, opens at the Southwark venue on May 31 following previews from May 23.

The cast includes Christopher Benjamin, Simon Chandler and Caroline Harker, all best known for their television work; Nigel Whitney, whose credits include the movie "Saving Pivate Ryan"; and newcomer James Russell.

Lewis and Foster are the writers of the acclaimed Our Boys, a comedy set in a military hospital that premiered at the Donmar Warehouse in 1995. Like All Mouth, that production saw Lewis double as writer/director.

Following All Mouth, the Chocolate Factory season will continue with the world premiere of Maltby and Shire's Take Flight, though dates for that production have yet to be confirmed.

For more on All Mouth, which is booking until July 7, call (0)20 7907 7060.