Pete and Dud were characters played by the comedians and entertainers Peter Cook and Dudley Moore. The dialogue format originated in 1964 when Dudley Moore invited Peter Cook to appear in a television performance. Cook scripted a conversation between two men from Dagenham wearing flat caps. This proved to be very popular with television audiences and the partnership was continued during the series Not Only... But Also. During the 1970s, Cook and Moore used a similar formula for the more adult Derek and Clive recordings.