Born on the 1st of December 1946 in Waterford, Ireland. In 1958 at the age of 11 he moved with his family to Swindon in England. Than he started to play guitar, piano and drums. He played drums in his first band The Doodles, and left them to join The Prefects, but also this was not for a long time. After finishing Swindon Art College, Gilbert moved to London in 1967 to try and further his musical career. From 1967 he start releasing singles. His success came slowly.