And their warning, issued on Wednesday, means any license holder - including the promoter, managers, seconds and other fighters on the July 14 bill at Upton Park - will be deemed to have broken the terms of their membership, and instantly stripped.

However, the fight has already sold a staggering 17,000 tickets, according to the The Sun.

Warren told the paper: “A very influential person in the media world called me one day and asked when I was going to stage the fight…