He studied at Norwich School of Art, 1971–4, and Chelsea School of Art, 1974–5. In 1984, Harrison took part in the International Garden Festival in Liverpool and gained a commission for Grizedale Forest, Cumbria. From 1985 he showed with Nicholas Treadwell Gallery, in 1987 at Air Gallery and in 1989 in East End Open Studios, at Chisenhale Studios. The Enfield, Middlesex-born sculptor continued to exhibit with Treadwell after the gallery moved to Aigen, Austria, explaining on its website: “My sculptures are urban, full of energy, colour and excitement of the city where people are born, love, fight, eat, get drunk, laugh and eventually die. They are humorous sculptures made of brightly painted wood and metal. Underlying the humour there are more serious messages.