End performance. However, the West End production flopped, in part due to misguided casting. After this, Ayckbourn experimented by collaborating with comedians, first writing a monologue for Tommy Cooper, and later with Ronnie Barker, who played Lord Slingsby-Craddock in the London production of Mr Whatnot in 1964, on the scripts for LWT's Hark at Barker. Ayckbourn used the pseudonym Peter Caulfield because he was under exclusive contract to the BBC at the time. In 1965, back at the Scarborough Library Theatre, Meet my Father was produced, and later retitled Relatively Speaking. This time, the play was a massive success, both in Scarborough and in the West End, earning Alan Ayckbourn a congratulatory telegram from Noël Coward. This was not quite the end of Ayckbourn's hit-and-miss record. His next play, The Sparrow ran for only three weeks at Scarborough but the following play, How the Other Half Loves, secured his runaway success as a playwright. The height of Ayckbourn's commercial success came with plays such as Absurd Person Singular (1975), The Norman Conquests trilogy (1973), Bedroom Farce (1975) and Just Between Ourselves (1976). These plays focused heavily on marriage in the British middle classes. The only failure during this period was a 1975 musical with Andrew Lloyd Webber, Jeeves; even this did little to dent Ayckbourn's career. From the 1980s, Ayckbourn moved away from the recurring theme of marriage to explore other contemporary issues. One example was Woman in Mind, a play performed entirely from the perspective of a woman going through a nervous breakdown. He also experimented with unconventional ways of writing plays: Intimate Exchanges, for example, has one beginning and sixteen possible endings, and in House & Garden, two plays take place simultaneously on two separate stages. He also diversified into children's theatre, such as Mr A's Amazing Maze Plays and musical plays, such as By Jeeves (a more successful rewrite of the original Jeeves). With a résumé of over seventy plays, of which more than forty have played at the National Theatre or in the West End, Alan Ayckbourn is one of England's most successful living playwrights. Despite his success, honours and awards (which include a prestigious Laurence Olivier Award), Alan Ayckbourn remains a relatively anonymous figure, dedicated to regional theatre. Throughout his writing career, all but four of his plays premiered at the Stephen Joseph Theatre in Scarborough in its three different locations. Ayckbourn received the CBE