John Simm will be in tomorrow's episode of "My London" on BBC Radio London at 13:00 GMT, talking to Gary Crowley about his memories of the capital, for a whole 60 minutes!
Catch the show here - I believe the BBC radio programmes are all accessible worldwide - and if you can't listen to it live, it should be available for at least another week after airing. :)
(And on a side-not, don't forget to catch John Simm in the next series of The Catch, airing March 9th - Rhys has been promoted to regular! And who doesn't need more Rhys in their lives.)