Following access by the
BBC to previously secret files held by the current
Czech Republic security services, it was revealed on 28 June 2012 that Mawby, who was given the code name "Laval", had spied for the Czechoslovak Socialist Republic during the
Cold War. He received
£100 () per nugget of information, and even signed a receipt for one payment. He handed over handwritten floor plans of the Prime Minister's office in the House of Commons, and details of who provided security at the office. He also promised to ask questions in the House on behalf of his paymasters. During the decade that Mawby supplied information he handed over lists of parliamentary committees, and details about his fellow politicians, including a supposedly confidential parliamentary investigation into a Conservative peer. Meetings sometimes took place three or four times in a month, although this greatly decreased by the end of the 1960s, and ended completely in November 1971. There is no indication in
MI5's authorised history that they knew of Mawby's spying activities, and he is the only Conservative MP known to have spied for a Communist government. ==See also==