Painter and teacher, born in Wales. He was a natural painter, notable for his often complex figurative compositions and watercolours of great delicacy. Sinnott studied at Cardiff College of Art, 1967–8, Gloucester College of Art, 1968–71, and Royal College of Art, 1971–4. He went on to teach at Ruskin School in Oxford, Canterbury College and St Martin’s School of Art. He made notable appearances at John Moores Exhibition, Liverpool, in 1978, 1980 and 1991–2, in the second winning a prize. His first solo show was at House Gallery, 1980, after which he exhibited regularly in Oxford, London and America. In 1990 he had simultaneous exhibitions at Bernard Jacobson and Anne Berthoud, in 2001 and 2003 shows at Martin Tinney Gallery, Cardiff, with one at The Museum of Modern Art, Wales, in Machynlleth, in 2005.