British actor, most famous for being Seventies-trapped Woobie Sam Tyler in Life On Mars, a magnificently hammy Master in Doctor Who and Intrepid Reporter Cal McCaffrey in State of Play. Other notable roles include Sexby in the English Civil War drama The Devil's Whore, Raskolnikov in a BBC adaptation of Crime and Punishment, and characters in the films Skellig and 24 Hour Party People (in the latter, playing Joy Division guitarist / New Order lead singer Bernard Sumner).Still, The Mighty Boosh asks "Who the fuck is John Simm?"
- Berserk Button: While he doesn't become outright enraged at it, he does seem to have a strong dislike towards print interviews saying they take things out of context. See Creator Backlash here.
- He even posted several tweets on his Twitter account about how much interviews that take what he says out of context annoy him.
- Clint Squint: Repeatedly as the Master.
- Grim Up North: His roles in Life On Mars and (to a lesser extent) Clocking Off.
- Large Ham: Went Ham-to-Ham with David Tennant, and depending on who you ask, he won.
- Manly Tears:
- Mean Character, Nice Actor: As the Master.