MPs jeer as PM says it is ‘incredible’ he was not told full story and says he was wrong to appoint Mandelson as US ambassador At his press conference Nigel Farage was asked about reports saying that Keir Starmer knew about the security concerns about Peter Mandelson that led to him failing his security vetting interview. That was a reference to the Telegraph splash , which says: Senior Whitehall sources told The Telegraph that the UKSV [UK Security Vetting] findings largely restated security risks that had already been drawn to Sir Keir’s attention. One senior source with knowledge of the process said: “The reality is that Starmer had already been warned about the major risks and he had waved them away.” Sources have told The Independent that MI6 failed to clear the Labour peer largely bec