MANCHESTER, ENGLAND - AUGUST 04: Paul Stredder, 35 from the Wirral looks on bloodied as he fights Brandon Harden, 21 from Edlington during an Ultimate Bare Knuckle Boxing (UBKB) event at Bowlers Exhibition Centre on August 4, 2018 in Manchester, England. The first formal bare-knuckle boxing bout in Britain was recorded in 1681 with the sport popularised by the end of the 17th century. The introduction of gloves into boxing with the Queensberry rules in 1867 eventually pushed bare-knuckle underground. Today the sport remains legal, but with no licensing body in place bare-knuckle in the UK is unregulated. Consisting of three 2-minute rounds or five 2-minute rounds for title fights, though rarely lasting that long, a fight sees boxers punch one another until knockout or until the referee or medic is forced to end it. Bare-knuckle boxing now looks set to shed its underground image and become more mainstream as the sports moves from pubs and car parks to bigger, more established venues. (Photo by Jack Taylor/Getty Images)