Contrary to what the media is reporting, Gordon Brown did not apologise! Although the Telegraph is the link provided, look at any newspaper, listen to any radio station or watch any television channel.
Consider what the man said: "I am sorry about what happened.........."
Call me a pedant, but to say one is sorry about something is not the same as saying sorry for something. It is also worth noting that were an 'honourable' man to "take full responsibility" it would result in his resignation - remember Lord Carrington over Falklands?
Want another go Gordon?