The New Ambassadors Theatre was designed by famous architect, W.G.R. Sprague, at the same time as the St Martin's Theatre just a few yards away. Both situated opposite of the renowned Ivy Restaurant, where the theatrical elite like gathering for dinner. The building has a humble facade with balustrade decorated with ball-shaped ornaments.
On the contrary, the Ambassadors' auditorium decorated in a Louis XVI style has walls full of ambassadorial crests. For the story, these were painted out during World War II and only reappeared in 1958. The seating capacity of just over 450 seats creates an intimate atmosphere making it the perfect for small plays.
The Ambassadors Theatre has housed many productions of great quality under various managements until famous Agatha Christie's play, Mousetrap, took over in November 1952. With one the longest run in the West End history, it transferred to the St Martin's Theatre after over 21 successful years during which Ambassadors rhymed with Mousetrap.
Acquired by the Ambassadors Theatre Group in 1999, it was renamed to the New Ambassadors Theatre. On Wednesday, 4 April 2007, it was announced that ATG had sold the venue to Sir Stephen Waley-Cohen, who has with immediate effect renamed the venue The Ambassadors as it once was. Previous productions include Mousetrap, Krapp's Last Tape, Stones In His Pockets, Women, Boston Marriage, Stomp.