When Christopher Matthewjoined an advertising agency in 1964, he found a world where every other copywriter had a play, a novel or a poetry collection on the go alongside their vital creative work on coffee, shampoo and paint. Prompted by the recollections of Fay Weldon , David Puttnam , William Trevor , John Bowen and others, he looks back with fondness at this cross-fertilisation. Producer Dave Sheasby