The travelling circus of a press tour for unbeaten Floyd Mayweather’s 50th career fight with the UFC star Conor McGregor alighted in the UK for its final phase on the four-day sojourn on Friday - but there was no let up in the war of words.

As the protracted pantomime took place on stage in front of over 10,000 baying fans at Wembley, McGregor and Mayweather traded profanities. "Four years ago I fought in London at The Forum in front of about 500 people. Now here I am about to quadruple my net worth with one half a fight. Sign me up. No one is going to kick, knee or elbow. And it’s against this little b****," the UFC fighter said.

McGregor went on a long rant, pulling the crowd to his side, taunting the American. "I'm going to knock you out on August 26. You have made a big mistake, for the money. I'm going to destroy your legacy."