true, but normally its a leak of policy, or something politically embarrassing. (brexit will be a great success/terrible failure because of x, delete to taste)

true, but normally its a leak of policy, or something politically embarrassing. (brexit will be a great success/terrible failure because of x, delete to taste) But this is different, this is a leak of an actual state secrets. This is much more secret because its expressly illegal. (the official secrets act makes many things vaguely illegal, but leaking things marked "secret" or similar is an actual offence.) Not only is it illegal, its also leaking other country's intelligence, which is a massive nono