A biopic of the relationship between Peter Cook (Ifans) and Dudley Moore (MacArdle) who became one of the best loved British comedy double acts...

Credited as the inventors of modern British satire, 'Not Only But Always' charts the searing highs and lows of these two extraordinary and different comedians, whose careers and private lives often swung in as uncontrolled and anarchic turns as their wit.

From their first meeting as Cambridge undergraduates in 1960, through their beginnings on Beyond The Fringe, the drama follows their infamous journey from the heady sixties, including their TV performances as the legendary Pete & Dud and Derek & Clive, up until Cook's death in 1995. Set across the decades the film covers a range of locations from Peter Cook's notorious Soho 'Establishment Club' and his founding of Private Eye magazine to Dudley Moore's launch into Hollywood film.

Terry Johnson's writing captures all the biting humour of what was one of the great British comedy partnerships, as well as exploring the deeply troubled private lives and complex relationship of the two greats who helped to redefine British comedy.