John Arthur voiced Cosmo Devine in the Big Finish Doctor Who audio story Invaders from Mars.
Arthur has had a long career in the United Kingdom, which has been equally almost split between theatre and television. Essentially a character actor, Arthur has guested on many of the biggest programmes in British television, including: All Creatures Great and Small with Peter Davison; Terry and June with June Whitfield; Fresh Fields with Julia McKenzie; Inspector Morse; Black Books with Bill Bailey; Skins; Hustle with Marc Warren and Robert Glenister and Coronation Street.