Good to see the Government still manages to maintain secure information..
Oops! Building firm blurts out secrets of hush-hush MI5 HQ
Oops! Building firm blurts out secrets of hush-hush MI5 HQ - Times Online
wonderfully....
"[...] By contrast the agency had been hoping to keep the existence of its £20m northern headquarters a secret.
MI5 decided to build the spy base after a review of the intelligence failures leading up to the suicide bombings in London on July 7, 2005."