Lee Evans is one of comedy's most versatile superstars. He can fill arenas with his stand-up shows, he can do Samuel Beckett and he was sensational in the stage version of The Producers. So quite what he is doing in this steaming pile of potty-mouthed would-be farce is a bit of a mystery. The late Clive Exton's play, written in 2005, has never been performed before and judging by its opening night I think I can see why.