He is best known as a member of the progressive rock band Van der Graaf Generator, appearing on each of their studio albums.

There is a picture of Evans with the rest of the New Economic Model in "Van der Graaf Generator – The Book".

He also works with Echo City, building outdoor constructions which can be used to make music, called "sonic playgrounds".

Evans also worked for a number of years at Shape Arts in an administrative role and as a workshop leader.

With Van der Graaf Generator: With The Misunderstood: With Echo City: With Subterraneans: With Nic Potter: With David Jackson and Life of Riley: With David Jackson and Hugh Banton: With Peter Hammill: With Big Buddha: With Peter Hammill: With Charlie and The Wide Boys: With Footsbarn Present's: With Didier Malherbe and Yan Emerich: With Mother Gong: With Amon Düül UK: With Nigel Mazlyn Jones: With Peter Blegvad: With Frank Tovey: With Kazue Sawai: With Anthony Phillips and Harry Williamson: