The new FOX series 24: Live Another Day begins broadcast with a 2 hour premiere, tonight 8-10pm ET in the US. UK fans can watch simultaneously on Sky 1 at 1am GMT. 

This website reveals the name of Joseph's character to be Yates. 

Guest Cast: Stephen Fry as Prime Minister Davies; Branko Tomovic as Belcheck; Joseph Millson as Yates...