A group of Conservative activists were punched and scratched by protesters from a rally attended by Jeremy Corbyn before fleeing after being told, ‘they have a gun’.

The students were at the Lord Moon of the Mall pub on Saturday when four men in their 'late 40s' shouted abuse after hearing them 'expressing centre-right views'.

When one woman, 20, asked why they 'hate the Tories' a thug threatened to punch her in the face and lashed out before being restrained.

The students were at the Lord Moon of the Mall pub on Saturday when four men in their 'late 40s' shouted abuse after hearing them 'expressing centre-right views'

The protesters, who had been at the Not One Day More march against Theresa May, returned 'looking for a fight' and squared up to another man, a recent graduate.

But one of the students, in his early 20s and wearing a suit, was told the attacker 'has a bottle behind his back and a gun' so rushed his three friends out the fire escape.

The police were later called and escorted one man out of the pub on Whitehall but made no arrests.

The student, who asked to be anonymous, told MailOnline: 'We had been at a conference of Bright Blue, a liberal Conservative think-tank, and went for a drink.

'I was wearing a suit and tie and someone asked me if I'm a Tory.

'I said “yes”, so he shouted to the pub "they are Tories!" and began arguing with us, which was heated but fine.

The protesters, who had been at the Not One Day More march against Theresa May, where Mr Corbyn spoke, came back 'looking for a fight' and squared up to another man

'He was getting increasingly angry - talking to a friend (also on the conference) who was a working class Tory from a similar place to the man shouting at us.

'A girl we were with asked why he hates the Tories, to which he said to her, "I’m going to punch you in the face".

‘That prompted me to get in the way between them. He squared up, backed off, but then came back and threw some punches.’

The student, who says he is also 'of a working-class background', said some other protesters tried to calm the thugs down but he was forced to leave for his safety.

He added: 'Someone at the bar told me “he has a bottle behind his back and a gun”.

‘After hearing that I grabbed the girl and told everyone to follow me out the fire exit.'

Another Tory activist involved in the encounter, who did not want to be named, said: 'Someone had their shirt ripped and their skin badly scratched by one Corbynite.

'Amazingly, his friends nearby did little to restrain him, and even allowed him to re-enter the pub and have another go.'

The Metropolitan Police said: 'Police were called on Saturday, 1 July at 21:46hrs to the Lord Moon pub, Whitehall, SW1 to reports of two people fighting.

But one of the students was told the attacker 'has a bottle behind his back and a gun' so rushed his three friends out the fire escape. Pictured: The march on Parliament Square

'It was subsequently reported as two people having a heated argument. Two groups of people were requested to leave the pub.

'One person was escorted from the premises. No offences were disclosed.'

The Not One More Day protest saw more than 10,000 protesters march on Parliament Square demanding the Prime Minister's resignation.

People shouted 'oh, Jeremy Corbyn', and some held signs showing Conservative politicians, including Mrs May and Foreign Secretary Boris Johnson, decapitated.

Shadow Chancellor John McDonnell and Shadow Home Secretary Diane Abbott also spoke at the event, during which protesters called on Theresa May to resign

In a speech, Mr Corbyn called for an end to the one percent cap on pay increases for public sector employees including nurses, doctors, policemen and firefighters.

He said: 'You can't keep our communities safe on the cheap when you cut over 20,000 police officers, 11,000 firefighters, and leave our hospitals in record deficit.

'We have to change our economic system so that it works for the many, not just a few.'

Shadow Chancellor John McDonnell and Shadow Home Secretary Diana Abbott also spoke at the event.

He pledged to support the victims of the Grenfell Fire and invest in the emergency services.

The People’s Assembly, which organised the event, said it wanted to ‘make sure’ the opposition to Mrs May’s government was made clear.

A spokesman for Wetherspoons said: 'The Lord Moon of the Mall is a very busy pub in the heart of London, close to Downing Street.

'We condemn any violence that occurs in our pubs and it appears that on this occasion customers at the pub were disturbed by the actions of a handful of people.'

MailOnline contacted the People’s Assembly for comment but received no reply.