Aaron Chalmers has transitioned from a reality television personality to a multifaceted combat sports athlete, competing in MMA, professional boxing, and bare-knuckle boxing. After joining the cast of the popular reality show Geordie Shore for its eighth series in 2014, Aaron Chalmers went on to establish himself as a multifaceted combat sports athlete, excelling in MMA, professional boxing, and bare-knuckle boxing. His initial foray into public recognition saw him remain a key cast member of Geordie Shore until its 16th season in 2018, building a significant following. Further solidifying his reality television presence, Chalmers appeared in the sixth series of Ex on the Beach in 2017.
In 2019, he returned to MTV, starring in the spin-off series Geordie Shore OGs, which continued to expand his reach within the unscripted television landscape. Chalmers transitioned into mixed martial arts (MMA) in 2017, having previously trained in Muay Thai. He made a successful professional MMA debut in May 2017 with BAMMA, securing a submission victory against Greg Jenkins. This strong start was followed by two additional victories with BAMMA that same year: a knockout against Alex Thompson and a TKO against Karl Donaldson.
His professional boxing journey continued in September 2023 with a TKO loss to Idris Virgo. Aaron Chalmers latest venture has seen him enter the demanding sport of bare-knuckle boxing, signing with the Bare Knuckle Fighting Championship (BKFC) in 2024. He made an impactful BKFC debut in April 2025, securing a TKO victory against Chas Symonds. Building on this success, he achieved another significant TKO win against Jack Fincham in September 2025, further establishing his formidable presence within the combat sports arena.