Andrew Mitchell suffers fresh blow as David Cameron quashes Cabinet returnÂ hopes Mr Mitchell found guilty of calling Downing Street police 'f***ing plebs' But former chief whip is refusing to give up on ministerial return Downing Street say chances of returning to government 'highly unlikely' Pleb-row Tory Andrew Mitchell has suffered a fresh blow after David Cameron moved to quash hopes of a Cabinet return. Mr Mitchell, who was last week found guilty of calling Downing Street police 'f***ing plebs', is refusing to give up on his political career. But the former chief whip's chances of returning to government after the election were dismissed as 'highly unlikely' by senior Downing Street sources. Andrew Mitchell is refusing to give up on a return to the Cabinet despite being found guilty of calling police 'f****** plebs' A source close to Mr Cameron told the Sunday Times: 'There are a lot of people champing at the bit to join the cabinet and the priority will be to promote those people. 'It's highly unlikely that Andrew will be brought back.' The revelation comes after Mr Mitchell's friends insisted he was 'not going to walk away'. A friend said Mr Mitchell was determined to relaunch his political career and hopes to return as a minister 'once the dust has settled'. The ally said: 'He's not going to walk away. He's still got a huge amount to offer. 'He's probably the best international development secretary we've ever had. He has had great support in the constituency from the local party and the local paper. Another said: 'After he stood down he was on his knees, but he got up off his knees and he fought bloody hard against the odds. He's standing again. He'll be back.' Mr Mitchell quit as chief whip after the 2012 'plebgate' incident at Downing Street and launched a libel case against the Sun newspaper for accusing him of using the 'toxic' work. But a High Court judge ruled on Thursday that the Tory MP probably had called officers 'plebs'. The row erupted in September 2012 when Mr Mitchell was stopped from cycling through the gates of Downing Street by PC Toby Rowland, who said the politician had sworn at him and called him and his colleagues 'plebs'. Mr Mitchell acknowledged he had used bad language but maintained he had not used the word pleb. PC Toby Rowland won his High Court battle with Andrew Mitchell after the Tory MP accused him of lying He sued News Group Newspapers for the Sun's coverage of the incident However, giving his ruling in the libel case on Thursday, Mr Justice Mitting said Mr Mitchell's behaviour had been 'childish' and his version of events was inconsistent with CCTV footage of the row with PC Rowland. Mr Mitchell, who may face total legal costs of about Â£2m, has been ordered to pay interim costs of Â£300,000. Prime Minister David Cameron said it was 'never right to be abusive or rude' to police. He added that 'the judge has made very clear his verdict and I think everyone should accept that verdict and move on'.