Painter in oil and tempera, born in Bristol, who painted in different styles under his own name and as Gidleigh Prowz. He studied at the Slade School of Fine Art, 1954–7, his teachers including Tom Monnington, William Coldstream and Lucian Freud. From 1957–60 Hallett was a television designer in Australia, where he began to have one-man exhibitions, including Macquarie Gallery, Sydney; Gallery A and Farmer’s Blaxland Gallery, in Melbourne; and at Broken Hill City Art Gallery. Also showed one-man in Paris and Bristol and in London at the AIA and Temple Galleries. London Sketch Club member. Hallett spent four years painting Hallett’s Panorama, at the Thames Barrier Visitor Centre, which depicts Georgian Bath as seen from a hot air balloon.