In resignation letter to PM Andrew Mitchell gives his assurance he did not call a police officer 'pleb' or 'moron'...
But Mitchell does admit he said to police: I thought you guys were supposed to f***ing help us.
The Prime Minister has accepted the resignation of Chief Whip Andrew Mitchell.
Further reaction can be found on ITV News.
Sorry to hear Andrew Mitchell has resigned; was the right thing to do.
Andrew Mitchell MP for Sutton Coldfield has resigned as Chief Whip after an ongoing row over a Downing Street police officer. No 10 Downing Street has confirmed.
Sky News is reporting that Chief Whip Andrew Mitchell has resigned.
Tory Party Vice Chairman Michael Fabricant said Andrew Mitchell has "re-ignited" the row over whether he swore at police by apparently denying it in the House of Commons today.
Several MPs have confirmed to me that AM did indeed say #pmqs "I didn't swear" (at the police). This puts a whole new light on the issue.
Ed Miliband called for Tory Chief Whip Andrew Mitchell to clarify what he said to police officers during his altercation outside the gates of Downing Street a few weeks ago in the House of Commons today.
During the exchange between the Labour leader and the Prime Minister Mr Mitchell appeared to deny having sworn at police, shaking his head and apparently mouthing "I didn't, I didn't" as Mr Miliband said that people who swear at police should be arrested.
In response, the Labour leader said: "He says from a sedentary position he didn't. Maybe he will tell us what he actually did say."
A senior Labour source later said that Mr Mitchell's apparent denial made it all the more essential for it to be made clear exactly what he did say.
The Prime Minister David Cameron said it was time to "move on" from the row over the actions of his Chief Whip. He said now that Andrew Mitchell has apologised to the officers involved, the apology had been accepted and it was now time to move on "to the big issues"
In a robust exchange across the House of Commons Labour Leader Ed Miliband reiterated his view that Mr Mitchell should lose his job:
"Just because the police officer has better manners than the Chief Whip, it doesn't mean he should keep his job"
The Labour leader Ed Miliband has called on Sutton Coldfield's MP, Andrew Mitchell, to resign from his position as Chief Whip following his alleged comments to a police officer.
David Cameron admits that Sutton Coldfield's MP Andrew Mitchell was in the wrong over alleged comments to a police officer.
The Prime Minister suffered a barrage of questions about the Chief Whip's future at Prime Minister's Questions.