British double bass player, best known as the original bass player with the Strawbs.

Originally a local government archivist, he came down to London to study for a degree. He joined the Strawberry Hill Boys in late 1966/very early 1967 after Tony Hooper saw him playing in a pub in Chalk Farm. He travelled over to Copenhagen with Dave Cousins, Hooper and Sandy Denny to make their early recordings. His excellent double bass playing is also featured on those tracks which make up Preserves Uncanned as well as the first two Strawbs albums released on A&M, Strawbs and Dragonfly.

He left the band in early 1970, just after Rick Wakeman became a member, as Cousins and Hooper moved towards an electric line-up, recruiting John Ford and Richard Hudson on bass and percussion respectively.

After the Strawbs, Chesterman worked with various bands, both folk and jazz-oriented.

In later years, he returned to his home town of Chester, where he was the county archivist, also spending some time away from England in the Caribbean.