Sports Direct boss Mike Ashley was ambushed outside a Westminster coffee shop by an enraged Newcastle fan who told the tycoon: 'You have ruined my club.'
Billionaire Ashley, 55, was spotted at a Pret a Manger in central London by a supporter who took the opportunity to vent his fury.
Ugo Obi, 27, was filmed as he approached Ashley, who was sat outside chatting to a man and woman.
Mr Obi shouts: 'Mike Ashley!' A smiling Ashley responds with something hard to make out.
He adds: 'You have ruined my club, you know.'
Ashley's male companion interjects while Ashley can be heard saying: 'Thank you very much, will you go please.'
Ugo then says again: 'You have ruined my club.' Ashley repeats: 'Will you go please.'
A voice in the background can be heard saying: ' I don't think I agree.'
Ashley then shakes his head and lifts his hand up and the man in the white t-shirt stands ups.
Ugo can be heard saying: 'If you don't want to see him, then sell us. You have ruined my club sir. Just sell the club and keep it moving.'
The man in the white t-shirt is standing telling Ugo: 'There will be no more of that.'
Lex Wilson uploaded the clip to Twitter yesterday afternoon captioned with: 'My boy just saw Mike Ashley in London. He wasn't happy. Alan Shearer will be proud.'
The clip has been seen by over 319,000 people with over 500 comments and 11,000 likes.
Newcastle legend and former captain Alan Shearer was among those to enjoy the clip, 'liking' it on his Twitter account.