A new sex scandal involving the UK's ruling Conservative Party hit the embattled British PM on Friday, the first day after he returned from a world trip, Euronews reported.

One MP resigned from his post within Boris Johnson's government on Thursday following accusations he groped two men while drunk.

Deputy Chief Whip Chris Pincher, who is responsible for discipline in the Conservative Party, admitted he "drank way too much" and apologized for "embarrassing myself and others" in his resignation letter.

He’s now had the whip removed by the Conservative Party, which means he will no longer sit with them in Parliament.

This incident—the Conservatives' fifth major sex scandal in three months—is bad news for Johnson who has just returned from an eight-day diplomacy marathon across two continents.

During his international tour, Johnson repeatedly tried to brush aside domestic political troubles and called for a focus on policy, not people.

Complaints were raised with the Conservative Party after Pincher, 52, allegedly touched two men, including another MP, at a private club in central London on Wednesday evening.

Although he resigned as deputy chief whip and has been suspended as a Tory MP, Pincher will still sit in parliament as an independent.

Pincher's case is the latest in a series of sex scandals to shake the Conservative Party since April.

An unnamed Conservative MP was accused of rape in May, days after Imran Ahmad Khan resigned as an MP following a sexual assault conviction.

In April, former MP Neil Parish quit after watching porn in parliament, while MP David Warburton has been temporarily suspended pending the outcome of a probe into multiple sexual harassment allegations.

Warburton, who is married with two children, says he has “enormous amounts of defence".

There have also been questions over reports that as foreign secretary, Johnson tried to get his then-girlfriend Carrie Johnson, who is now his wife, a top job in his ministry in 2018.

The report first appeared in The Times on 18 June, alleging that Johnson was blocked by colleagues after they discovered their affair. It was later withdrawn.

Both The Times and Johnson have declined to comment, however Downing Street has confirmed it did ask the paper to pull the story.

The current Conservative government has also been rocked by scandals surrounding drunken Downing Street parties during the Coronavirus lockdowns.

This resulted in Johnson being held to a vote of no confidence by his own camp, which he narrowly survived.