Source:
BBCThe terrorist threat level specific to major UK transport hubs has been raised from substantial to severe.
The move includes airports and London railway terminals, although there is no suggestion of any intelligence of an imminent attack.
The BBC has seen a letter to aviation chiefs saying there are indications al-Qaeda "may be considering an attack".
The threat to the UK overall remains where it has been for the past year at the second-highest level, "severe".
Read more:
http://www.bbc.co.uk/news/uk-12133290
Government warnsaviation of possible al Qaeda attack By Stefano Ambrogi
LONDON | Fri Jan 7, 2011 5:46pm GMT
(Reuters) - The government has warned the aviation industry of a possible al Qaeda attack, security sources and the BBC said on Friday.
The BBC said it had obtained a letter from the Department of Transport addressed to the air transport sector which explained the reason for heightened threat.
"There are indications that al Qaeda may be considering an attack against a UK airport or aviation sector target," it quoted the letter as saying.
"The economic, political and psychological significance of the UK aviation sector coupled with the large crowds present within some of its major assets would enable a successful attack to fulfil al Qaeda's objectives."
Full article:
http://uk.reuters.com/article/idUKTRE7061LV20110107If I was feeling cynical...