Callum Simpson

Callum Simpson's career is defined by his championship achievements. He captured the British and Commonwealth super-middleweight titles in 2024, then added the European title in 2025. His ability to unify domestic and continental belts in a short span is a rare feat, and he defended them successfully before his first defeat. His knockout power, with 14 stoppages in 19 wins, makes him a dangerous opponent for any super-middleweight.