Jason Lewis and Tom Harper
UK Daily Mail
April 18, 2010
MI5 used hidden electronic surveillance equipment to secretly monitor 10 Downing Street, the Cabinet and at least five Prime Ministers, The Mail on Sunday can reveal.
The extraordinary disclosure comes despite a succession of parliamentary statements that no such bugging ever took place.
And it follows a behind-the-scenes row in which senior Whitehall civil servants – backed by Prime Minister Gordon Brown – attempted to suppress the revelation.
The Mail on Sunday has learned that top-secret files held by the Security Service show it installed electronic listening devices in three highly sensitive areas of No10 – the Cabinet Room, the Waiting Room and the Prime Minister’s study.