Career
He is best known as the former bass guitarist of progressive rock band Supertramp. Thomson"s musical career began in August 1969, when he joined a local Glaswegian band "The Beings". In February 1972, Thomson auditioned for Supertramp, and ended up playing several gigs as a temporary stand-in.
In 1973, Thomson permanently joined Supertramp and helped in the business management with Dave Margereson.
He also persuaded John Helliwell to join the band. Thomson played with Supertramp on all of their most famous albums: Crime of the Century, Crisis? What Crisis?, Even in the Quietest Moments, Breakfast in America, Paris..Famous Last Words.., Brother Where You Bound and Free as a Bird.
Thomson left Supertramp in 1988, but have since done many reunion tours. Thomson has not taken part in these reunions.
He has since become a publisher in the music business, creating Trinity Publishing, and worked with a Chicago, Illinois management company.
Thomson has four children, Laura, James, Kyle and Emma. Kyle plays soccer for teams affiliated to Loyola University of Chicago. Thomson is the older brother of Ali Thomson.