Boris Johnson is facing calls to expel the former Tory deputy chief whip from the party after he dramatically quit following a drunken incident.

Chris Pincher, who was responsible for maintaining discipline among Conservative MPs, said he had “embarrassed myself and other people” after having had “far too much” to drink.

The Sun reported that he stood down after assaulting two fellow guests at the Carlton Club – a Tory Party private members’ club in London’s Piccadilly – on Wednesday evening (June 29).

However, the paper said he would continue to sit as a Tory MP as he was considered to have done the right thing by admitting wrongdoing and resigning.

The National: Boris Johnson is facing another misconduct incident from one of his MPs (PA)Boris Johnson is facing another misconduct incident from one of his MPs (PA)

A spokesman for the Metropolitan Police said the force has not received any reports of an assault at the Carlton Club on Wednesday.

Wales Secretary Simon Hart commented on the situation, saying it was up to Conservative chief whip Chris Heaton-Harris to decide whether to withdraw the whip from Mr Pincher.

The Cabinet minister told Sky News: “This makes me very sad, it makes me sad for everybody who’s been involved in these things. It’s clearly something which has gone terribly wrong.

“There is a process, I think it’s important that the process is followed.”

“I think it is entirely right, that the chief whip and others take a view today about what is the appropriate course of action.

“Of course, if there are those who are victims of this or who wish to raise a complaint, they can do so.”

Labour said it showed the party was “mired in sleaze and scandal” and questioned how Mr Pincher could still be allowed to take the Conservative whip given what had happened.

Angela Rayner, the Labour deputy leader, said: “This latest episode shows how far standards in public life have been degraded on Boris Johnson’s watch.

“Boris Johnson has serious questions to answer about why Chris Pincher was given this role in the first place and how he can remain a Conservative MP.

“The Conservative Party is so mired in sleaze and scandal that it is totally unable to tackle the challenges facing the British people.”

Mr Pincher's departure in such dramatic circumstances is a further blow for the Prime Minister who has been beset with allegations of misconduct over lockdown parties in Downing Street.

The National: Chris Pincher was appointed with Chris Heaton Harris (left) last February to the whip positions (PA)Chris Pincher was appointed with Chris Heaton Harris (left) last February to the whip positions (PA)

The Tamworth MP was appointed alongside chief whip Chris Heaton-Harris last February to shore up support for the Prime Minister amid growing unrest among Tory MPs over the “partygate” disclosures.

It is the second time he has quit the whips office, having resigned as a junior whip in November 2017 following a complaint that he made an unwanted pass at the former Olympic rower and Conservative candidate Alex Story.

Having referred himself to both the police and the Conservative Party complaints procedure, he was brought back by Theresa May as deputy chief whip in January 2018.

It leaves Mr Johnson, who returned from the Nato summit on Thursday (June 30) after nine days out of the country, with another headache with two crucial roles to fill, alongisde Oliver Downden quitting due to by-election losses.