Andrew Mitchell admitted swearing at a police officer during an argument at the Downing Street gates in his resignation letter to Prime Minister David Cameron.
Mitchell told Cameron his parting remark to the officer, "I thought you guys were supposed to f**king help us" was "obviously wrong".
David Cameron admits it 'became apparent' to the former Chief Whip that he could no longer do his job. So why was it not apparent to the PM?
Government Chief Whip Andrew Mitchell has resigned after swearing at police guarding Downing Street.
Losing one's temper with a police officer would be excusable in most people, but for the Tory chief whip to do means so much more.