Percival James Cocking was an artist for the publications of Amalgamated Press. He began contributing single drawings for the company's weekly comics, after attending Art School. His first feature was 'Sunbeam the Innocent' for Chips in 1903, followed by 'Mulberry Flats' (1906) and 'Tom the Ticket of Leave Man' (1910) in Comic Cuts. The latter became 'Jolly Tom the Menagerie Man' in 1917 and was supplemented by 'Jackie and Sammy the Terrible Twins' in the following year.
Cocking took over the 'Weary Willie and Tired Tim' comic from its creator Tom Browne in 1909. He drew the comic on the front page of Illustrated Chips until the end of its run in 1953. Percy Cocking has additionally drawn for Funny Wonder, Jester, Lot-O-Fun, Butterfly, Joker, Sparkler and Crackers. Under the name Jack Daw he contributed to the albums published by Gerard Swan and Martin & Reid in the 1950s.