SCOTLAND Yard has warned Diana inquest lawyer Michael Mansfield QC that he may have been targeted by News of the World phone hackers, the barrister has revealed.

Meanwhile, the Government is to urgently review its advertising contracts with the News of the World, Commons leader Sir George Young told MPs today.

Speaking in the House of Commons, Sir George said he would ''raise the matter urgently'' with the Cabinet Office following the decision by a number of private companies to cut their advertising with the newspaper.

His comments came as Liberal Democrat MP Stephen Williams (Bristol West) asked the Government to disclose how much it spent on advertising with the Sunday newspaper.

Reg Keys, whose son Tom was one of six Red Caps killed in a 2003 massacre in Iraq, is the latest to say that he is sure someone listened in to phone conversations he had with other bereaved relatives.

The retired paramedic said he had not been contacted by police over the phone-hacking allegations, and he previously had no reason to believe journalists were snooping on his calls.

He stood against then prime minister Tony Blair in the 2005 general election in Sedgefield on an anti-Iraq war ticket, and had conversations with senior officers about failures in equipment which may have contributed to the military policemen's deaths in Majar al-Kabir.

Mr Keys, from North Wales, said: ''I have no doubt whatsoever that people listened to our conversations.

''You could hear a 'click' when we started talking.

''We had to be very guarded in our conversations and we used codewords for certain senior officers' names.''

Mr Keys was convinced at the time that secret agencies, and not journalists, were snooping.

''I never for one moment thought it was a newspaper doing it,'' he said. ''Maybe I got that completely wrong.''