He is part of the Dead Ringers television and radio series, and is the voice of Murdoc Niccals in the virtual band Gorillaz.
He provided the voices of Mick Jagger and David Bowie for the Steve Wright in the Afternoon show on BBC Radio 1 in the late-1980s and early-1990s.
In 1996, he performed in a comedy spoof sketch TV advert to The Professionals imitating Martin Shaw's character of Doyle (with the actor Ray Trickett playing Lewis Collins' Bodie) for the release of the Nissan Almera.
Cornwell has appeared in several films made by the Comic Strip, including the role as Dave Spanker in Detectives on the Edge of a Nervous Breakdown.
[4] Cornwell also voiced Sir Lancelot and Robin Hood in the animated children's television series King Arthur's Disasters.