Painter, notably a muralist, and teacher, born in Liverpool, father a merchant seaman. Despite a poor background, was encouraged by his mother and his art master David Copestake at Hillfoot Hey Grammar School, then attended Liverpool College of Art, 1961–5. Partly supported his studies by playing in a Rock band, Liverpool Flintstones, 1959–64, sometimes at the Cavern Club with The Beatles. On the strength of highly imaginative Surrealist work, entered Royal College of Art on a postgraduate scholarship, 1966–9. His diploma show contained pictures mixing realism, fantasy and grotesque eroticism. After a stay in Morocco, Walker lived in squats in Notting Hill. From 1972 until his death lectured at a wide range of colleges and polytechnics.
Text source: 'Artists in Britain Since 1945' by David Buckman (Art Dictionaries Ltd, part of Sansom & Company)