British · Ipswich, England · Born 22 January 1994English featherweight known for a lengthy undefeated UFC stretch, now competing against top-ranked contenders with mixed recent results.
Arnold Billy Allen was born on 22 January 1994 in Ipswich, Suffolk, England, and turned professional in 2012, developing into one of the most technically sound and durable featherweights in the UFC, nicknamed "Almighty." Allen built one of the longest unbeaten streaks in UFC featherweight history, winning 12 consecutive fights between 2016 and 2022, a run that established him as one of the division's most avoided contenders despite his relatively low public profile compared to some of the sport's more flamboyant stars. Allen's unbeaten UFC run finally ended in 2023 against former champion Max Holloway, a competitive decision loss that nonetheless underlined his standing among the division's elite, having also defeated the likes of Calvin Kattar during his rise. Allen has continued competing at the top level of the UFC featherweight division, renowned for his well-rounded skill set combining Brazilian jiu-jitsu, established under black belt instructor Mark Nixon, with sharp, technical striking, and remains one of the most respected fighters to emerge from the British MMA scene.
Long unbeaten UFC featherweight run before facing elite competition
How They Played
Allen is known for his well-rounded fighting style, combining solid striking with effective grappling skills. He displays excellent fight IQ and tactical awareness, often adapting his approach based on his opponent's strengths and weaknesses. His technical precision and ability to control distance make him a difficult matchup for most featherweights.
Lasting Impact
One of the most promising British MMA fighters to compete in the UFC featherweight division
Career Honours
- 3x UFC Performance of the Night bonus
British Athletes