(b Leeds, 30 Jan. 1920; d St Ives, 20 Mar. 1999).
British painter, writer, and designer. His early paintings were influenced by Braque and Matisse, but in 1956 he turned to abstraction; in the same year he settled in Cornwall, becoming a member of the St Ives School. His abstracts were varied, including stripe paintings—vertical and horizontal—as well as looser formats with soft-edged shapes, but all his work is notable for its vibrant colour. He wrote several books, including The Changing Forms of Art (1955), The Shape of Colour (1973), and studies of Vlaminck (1947), Hitchens (1955), and Braque (1958).