LONDON (Reuters) - Britain’s Prince William has welcomed a new investigation into how the BBC secured a famous 1995 interview with his mother Princess Diana after accusations that she had been tricked into taking part.The new inquiry led by a former Supreme Court justice will focus on how the broadcaster obtained the interview and whether executives covered up any wrongdoing. “The independent investigation is a step in the right direction,” William said in a statement. “It should help establish the truth behind the actions that led to the Panorama interview and subsequent decisions taken by those in the BBC at the time.” During Diana’s interview with journalist Martin Bashir, watched by more than 20 million viewers in Britain, she shocked the nation by admitting to an affair and giving intimate details of her failed marriage to heir-to-the-throne Prince Charles. This month, her brother Charles Spencer said the BBC had failed to apologise for what he said were forged documents and “other deceit” which led him to introduce Diana to Bashir. The BBC’s Director General Tim Davie said the broadcaster was determined to get to the truth about Spencer’s claims.