(b Leamington Spa, Warwickshire, 13 Oct. 1915; d Hayle, nr. St Ives, 1 Sept. 2003).
British painter, one of the leading St Ives painters. He started painting in 1943 when he was a prisoner of war, encouraged by his fellow prisoner Adrian Heath, then studied at St Ives and under Coldstream and Pasmore at the Camberwell School of Art, 1947–50. He began painting in the sober, naturalistic tradition of the Euston Road School, but he soon turned to abstraction. His work remained based on observations of nature, however, often the harbour at St Ives (where he lived for much of the 1950s and 1960s). Characteristically he used patterns of interlinked shapes—strongly outlined but avoiding geometrical regularity. He taught at various art schools, notably at Reading University, 1965–81. His son AnthonyFrost (b 1951) is also an abstract painter of the St Ives School.