Britain’s top counter-terrorism officer has resigned after jeopardising a major anti-terrorism raid. Bob Quick was photographed carrying documents marked “secret” that revealed details of an upcoming operation.Names of senior officers, locations and details of the threat were all contained in the document. The story made the front pages of most of Britain’s press. The memo in question was blurred by newspapers because of the details it contained. Quick says he is well aware his actions could have compromised attempts to foil an alleged terrorist plot the prime minister has described as “very big”. Gordon Brown said “Mr Quick has made his apologies. I spoke to him this morning and he was very concerned that his apology was made for a blunder that happened. I think we must not forget that the police have been successful in carrying out their arrests and, of course, what happens in the next few days is a matter for the police inquiries.” The blunder forced police to bring forward the operation to thwart a suspected al Qaeda attack, just hours after the document was pictured. Yesterday, they carried out an unusual daylight raid arresting 12 people, 11 of whom were Pakistani. It is believed the alleged terrorist plot was in the final stages of planning.