Aside from both appearing as lead actors in Spooks, Matthew and his wife Keeley Hawes worked together in Death at a Funeral (2007) and "Season 1, Episode 7" of Ashes to Ashes, wherein Keeley is a series regular.
In portraying Mr. Darcy in Pride and Prejudice, Matthew based his performance solely from the script since he had not read the book prior to shooting the film.
Matthew: The point of being an actor, the whole idea of being an actor is that people don't know who you are. If they know who you are you can't do it, you're f*cked.
(about being cast on "Little Dorrit")Matthew: This story really blew my hair back. Then when the rest of the casting came through, I couldn't believe my luck. I've been in some sexy casts in my time, but nothing quite like this!
(on doing a Hollywood blockbuster)Matthew: I don't get excited by the whole zhooshiness factor... Apart from earning an awful lot of money, why would you want to go to LA and try to bag a film regardless of how crap it is, when you could be struggling with such a challenge? It's bullshit.