Several of the episodes have different titles in the US - for example, the season 1 finale "The Lesser of Two Evils" became "Mean, Dirty, Nasty", and the season 2 finale "Smoke and Mirrors" became "Pit of Secrets".
I ate with you!
Hindu: I just wanted to play football with you!
At numerous times throughout series 1 notably in "One Last Dance" and "Traitor's Gate" close-ups of intelligence files show that all the information is the same and all relates to Mary Kane's terminated pregnancy from episode 1 "Thou Shalt Not Kill".
The show does not have any end credits, ending each episode with a trailer for the next episode and only showing a BBC production information screen. It does not list any cast/crew. Just the caption "A Kudos Production".
In Australia the shot in episode 2.10 when Tom drops the burning telex towards the camera was omitted. Similarly the pre-titles sequence in episode 2.5 was altered to change the colour of the text on the computer screen and a sound effect was added to blot out the security designation of one of the national security threats.