Andrew Mitchell row: Police leader attacks Cameron

A police union leader has attacked David Cameron as the row continues over Chief Whip Andrew Mitchell's words to an officer.

The prime minister's tribute to the two police officers killed in Manchester was "hollow words", Metropolitan Police Federation chairman John Tully said.

Mr Tully said this was the opinion of "many of my colleagues".

A Downing Street source said the PM had made it clear "that he has the greatest respect for the police".

Adam Fleming reports.