This is the moment flag-waving Chinese tourists demand a piano player stops filming in 's St Pancras station before police tell him not to publish the video.

Brendan Kavanagh, who regularly takes to the station to play boogie woogie tunes, was on when he was approached by a woman from the tourist group.

She told him she was working for Chinese TV and asked whether they were in view of his camera and then followed up saying that 'wasn't allowed'.

The tourists, who were wearing red scarfs, gathered around the pianist, who repeatedly explained to them that he was allowed to film since they were in a public place.

'We are in Great Britain, we are not in ,' he added.

The situation soon escalated after Mr Kavanagh was accused of 'trying to touch' one of the female tourists after he seemingly pointed to the Chinese flag she was holding.

Brendan Kavanagh (pictured at the piano), who regularly takes to the station to play boogie woogie tunes, was livestreaming on Youtube when he was approached by a woman from the tourist group

The woman (pictured) told him she was working for Chinese TV and asked whether they were in view of his camera and then followed up saying that 'wasn't allowed'

A male member of the group, who was the most vocal in his complaints against being filmed, suddenly started screaming: 'Why are you touching her? Stop touching her. Don't touch her.'

He added: 'You are not the same age, do not touch her.' The woman intervened and said: 'Don't shoot him, don't shoot him. What's the problem?'

Mr Kavanagh, seemingly confused after being shouted at, defended himself by saying he only touched the flag.

The piano player repeatedly pointed to the small red flags with five yellow stars, which he claimed were communist flags.

One of the tourists said that Mr Kavanagh should 'educate' himself, as the flag is not a flag for the communist party - which would portray a yellow hammer and sickle instead of the five stars. 

The woman the pianist allegedly touched said she was 'here to celebrate the new year' and didn't want to be filmed doing so. 

The pair repeatedly accused Mr Kavanagh of not 'respecting their right' by filming them, but the piano player again pointed out that he is allowed to film them as there is no expectation of privacy in a public place in the UK. 

A bystander also intervened and told the tourists to leave if they didn't like being filmed.

Finally, a pair of Met Police officers approached the group. One tourist said to the male officer that Mr Kavanagh filmed them and they asked him to remove the footage, but he refused.

'You're in a public place,' the policeman explained repeatedly - until the female officer chimed in and said to the cameraperson: 'Excuse me, if we're having a police matter, you need to put that phone down.'

Mr Kavanagh then addressed his viewers as the officers took the tourists aside. He said: 'The Chinese communist party told us not to film here.'

The tourists, who were wearing red scarfs, gathered around the pianist, who repeatedly explained to them that he was allowed to film since they were in a public place. 'We are in Great Britain, we are not in China,' he added

The situation soon escalated after Mr Kavanagh was accused of 'trying to touch' one of the female tourists after he seemingly pointed to the Chinese flag she was holding. One of the tourists shouted at him, which the pianist met with a confused look (pictured here)

Afterwards, the policewoman warned him: 'This is not to go on your channel by the way, this is me talking to you.

' But Mr Kavanagh interrupted and said: 'Listen, we're in Britain, we're in a public space, it's a free country.'

The officer added: 'The matter is, they say you've been making communist comments at them,' but Mr Kavanagh denied this and added that he only said they were waving communists flags.

She also asked him about the allegation that he tried to touch one of the tourists, which the pianist denied. He said: 'I was not trying to touch her, that's why I have a camera.'

'They [the tourists] have requested that the video where they approach gets deleted and is not used on your channel [...] They work for a company and their faces cannot be shown on TV or on somebody's channel,' she told Mr Kavanagh.

Eventually the tourists and police officers moved one, leaving Mr Kavanagh to finish his livestream with more boogie woogie songs after declaring: 'Free speech prevails.' 

In a follow up video today, the Youtube star claimed that the Chinese Communist Party (CCP) 'are trying to get [the footage] taken down'.