Roy Evans is an actor who has appeared in British Television from 1960s onwards appearing in a wide range of productions including Doctor Who (The Daleks' Master Plan as Trantis, The Green Death as Bert & The Monster of Peladon as a miner), Blake's 7 (Redemption as a Slave) and Porterhouse Blue (as Arthur).

Also appeared in Global Conspiracy, Life Beyond the Box: Norman Stanley Fletcher, Fortysomething, The Gathering, Children of the New Forest, Keep the Aspidistra Flying, The Bill , Ain't Misbehavin', Loved by You, Restoration, Johnny and the Dead, Murder Most Horrid, The Hour of the Pig, Forever Green, Adam Bede, Further Up Pompeii, Hamlet, Only Fools and Horses.... , Around the World in 80 Days, Shadow of the Noose, Campion, Screen Two, Jack the Ripper, Mr. Majeika, Wish Me Luck, Knights of God, Porterhouse Blue, Dramarama, Foreign Body, Casualty, Silas Marner: The Weaver of Raveloe, Lost in London, The Doctor and the Devils, Dempsey and Makepeace, Tangiers, The Day the Universe Changed, Return to Waterloo, The Company of Wolves, Funny Money, The Black Adder, Jury, Oliver Twist, Baal, Prisoners of Conscience, The Little World of Don Camillo, M*A*S*H, The Elephant Man, Raise the Titanic, Cribb, Worzel Gummidge, Schalcken the Painter, Minder, The Onedin Line, Crime and Punishment, Play for Today, Dick Turpin, Blakes 7 , Les Miserables, Secret Army, Return of the Sain, The Big Sleep, Terror, Treasure Island, Midnight Is a Place, The Prince and the Pauper, Jabberwocky, Hazlitt in Love, No Hard Feelings, Escape from the Dark, The Bawdy Adventures of Tom Jones, Poldark, A Legacy, The Changes, Churchill's People, Sex Play, Doctor at Sea, Van der Valk, Warship, The Song of Songs, The Vault of Horror, Psychomania, Dark Places, The Protectors, Stage 2, Flyaway, Loving Memory, Dr Jekyll & Sister Hyde, Doctor at Large, Budgie, Out of the Unknown, The House That Dripped Blood, Say Hello to Yesterday, Dixon of Dock Green, From a Bird's Eye View, The Mating Machine, Here Come the Double Deckers!, The Troubleshooters, Paul Temple, Moon Zero Two, Where's Jack?, Wolfshead: The Legend of Robin Hood, Oliver! , Decline and Fall... of a Birdwatcher, Gazette, Champion House, Theatre 625, The Magnificent Six and �: Kontiki Kids, The Magnificent Six and �: It's Not Cricket, A Ghost of a Chance, The Blood Beast Terror, Half a Sixpence, After Many a Summer, Dance of the Vampires, Adam Adamant Lives!, Mr. Aitch, The Wednesday Play, Softly Softly, Thirty-Minute Theatre

Played Julius Silverstein in the Doctor Who serial The Web of Fear.

David Fisher wrote several television scripts and novelised two of his stories as Doctor Who and the Creature from the Pit and Doctor Who and the Leisure Hive. 

Fisher wrote another script for Doctor Who called The Gamble With Time. He was unable to revise it, so it was altered by others. It became City of Death and was produced under the pseudonym David Agnew.

Also worked on Hammer House of Mystery and Suspense, Hammer House of Horror, The Mackinnons, General Hospital, Crown Court, Sutherland's Law, The Lotus Eaters, Crime of Passion, The Troubleshooters, Dixon of Dock Green, This Man Craig, Orlando