In footage posted online, the man can be seen screaming at the group of young black men while swinging from a handrail, which is understood to have taken place on the Central Line on Sunday afternoon.

The passenger, who is wearing a black polo shirt and beige shorts, screams: ‘This is my home. You’re all going back and you know it as well.’

When a passenger in the group asks where they are going back to, the white man retorts: ‘You know where you’re going back.’

Someone then repeatedly asks for his name, to which he shouts: ‘No, you’re black, oh my god’.

A woman filming the incident asks: ‘What’s that supposed to mean? What does being black have to do with anything?’ He then swivels around and tells her to shut up.

The video cuts to the man repeatedly chanting ‘lesser than us’ while swaying from the handrail, before saying ‘you’re my pets’ to a group of black men.

A caption on the video, shared thousands of times on social media, read: ‘Being black in the UK is tiring. These black boys just wanted to go home and this supremacist just kept provoking them.’

In a second video shared online, the man walks up to a group of black people as they get off at Bank station in central London, shouting ‘come on’.

As they get up to leave, the white man squares up to them with clenched fists close to the open doors. One of them suddenly turns and punches him with a right hook.

The man stumbles and falls backwards in the train carriage, appearing to be knocked out.

Passengers shout ‘well done’ and a woman can be heard laughing, before others rush to check his pulse and put him in the recovery position.

As they call for help, others can be heard saying ‘don’t help a racist’ and ‘you deserved that’.

British Transport Police and London Ambulance service said they had no reports of a violent incident at Bank station on Sunday and that the welfare of the man is currently unknown, reported MailOnline.

Anyone with information should call the British Transport Police on 101.