Stephen Tomlin has appeared in Emmerdale in four roles:
- Ian in December 1997.
- Bryn Markham in October 2005.
- A consultant at a Nottingham hospital that Jimmy King was admitted to in March 2011.
- The doctor who broke the news to David Metcalfe that he was clear of cancer in September 2016.
He has also appeared in A Kind of Loving, Strangers, Harry's Game, The Beiderbecke Affair, Dramarama, The Hound of the Baskervilles, Cracker, Agatha Christie's Poirot, Dangerfield, Hetty Wainthropp Investigates, Casualty, Far from the Madding Crowd, Heartbeat, Blue Murder, Donovan, Vincent, Mansfield Park, Casualty 1909, Waterloo Road and Coronation Street.