Topzle Updated: Wikipedia source
Arnold Billy Allen (born 22 January 1994) is an English professional mixed martial artist. He currently competes in the Featherweight division of the Ultimate Fighting Championship (UFC). As of 19 August 2025, he is #6 in the UFC featherweight rankings.
| 23 matches | 20 wins | 3 losses |
| By knockout | 7 | 0 |
| By submission | 4 | 0 |
| By decision | 9 | 3 |
| Res. | Record | Opponent | Method | Event | Date | Round | Time | Location | Notes |
| Win | 20–3 | Giga Chikadze | Decision (unanimous) | UFC 304 | July 27, 2024 | 3 | 5:00 | Manchester, England | |
| Loss | 19–3 | Movsar Evloev | Decision (unanimous) | UFC 297 | January 20, 2024 | 3 | 5:00 | Toronto, Ontario, Canada | |
| Loss | 19–2 | Max Holloway | Decision (unanimous) | UFC on ESPN: Holloway vs. Allen | April 15, 2023 | 5 | 5:00 | Kansas City, Missouri, United States | |
| Win | 19–1 | Calvin Kattar | TKO (knee injury) | UFC Fight Night: Kattar vs. Allen | October 29, 2022 | 2 | 0:08 | Las Vegas, Nevada, United States | |
| Win | 18–1 | Dan Hooker | TKO (punches and elbows) | UFC Fight Night: Volkov vs. Aspinall | March 19, 2022 | 1 | 2:33 | London, England | Performance of the Night. |
| Win | 17–1 | Sodiq Yusuff | Decision (unanimous) | UFC on ABC: Vettori vs. Holland | April 10, 2021 | 3 | 5:00 | Las Vegas, Nevada, United States | |
| Win | 16–1 | Nik Lentz | Decision (unanimous) | UFC Fight Night: Blaydes vs. dos Santos | January 25, 2020 | 3 | 5:00 | Raleigh, North Carolina, United States | |
| Win | 15–1 | Gilbert Melendez | Decision (unanimous) | UFC 239 | July 6, 2019 | 3 | 5:00 | Las Vegas, Nevada, United States | |
| Win | 14–1 | Jordan Rinaldi | Decision (unanimous) | UFC Fight Night: Till vs. Masvidal | March 16, 2019 | 3 | 5:00 | London, England | |
| Win | 13–1 | Mads Burnell | Submission (guillotine choke) | UFC Fight Night: Thompson vs. Till | May 27, 2018 | 3 | 2:41 | Liverpool, England | Performance of the Night. |
| Win | 12–1 | Makwan Amirkhani | Decision (split) | UFC Fight Night: Manuwa vs. Anderson | March 18, 2017 | 3 | 5:00 | London, England | |
| Win | 11–1 | Yaotzin Meza | Decision (unanimous) | UFC Fight Night: Silva vs. Bisping | February 27, 2016 | 3 | 5:00 | London, England | |
| Win | 10–1 | Alan Omer | Submission (guillotine choke) | UFC Fight Night: Jędrzejczyk vs. Penne | June 20, 2015 | 3 | 1:41 | Berlin, Germany | Return to Featherweight. Performance of the Night. |
| Win | 9–1 | Paul Cook | TKO (doctor stoppage) | M4TC 15 | November 29, 2014 | 2 | 5:00 | Tyne and Wear, England | Lightweight debut. Won the M4TC Lightweight Championship. |
| Win | 8–1 | Gaetano Pirello | Decision (unanimous) | Cage Warriors 71 | August 22, 2014 | 3 | 5:00 | Amman, Jordan | |
| Loss | 7–1 | Marcin Wrzosek | Decision (unanimous) | Cage Warriors 69 | June 7, 2014 | 3 | 5:00 | London, England | |
| Win | 7–0 | Tobias Huber | TKO (punches) | Cage Warriors: Fight Night 11 | April 18, 2014 | 1 | 0:37 | Amman, Jordan | |
| Win | 6–0 | Doni Miller | TKO (punches) | Cage Warriors 61 | December 13, 2013 | 2 | 0:34 | Amman, Jordan | |
| Win | 5–0 | Declan Williams | Submission (triangle choke) | Cage Warriors 60 | October 5, 2013 | 2 | 4:50 | London, England | |
| Win | 4–0 | Andy Green | Submission (rear-naked choke) | Cage Warriors 56 | July 6, 2013 | 1 | 4:00 | London, England | |
| Win | 3–0 | Carl Orriss | Decision (unanimous) | Ultimate Challenge MMA 32 | February 2, 2013 | 3 | 5:00 | London, England | Featherweight debut. |
| Win | 2–0 | Kim Thinghaugen | TKO (doctor stoppage) | Ultimate Warrior Challenge 21 | October 20, 2012 | 1 | 5:00 | Southend-on-Sea, England | |
| Win | 1–0 | Nathan Greyson | KO (punch) | Ultimate Challenge MMA 27 | April 7, 2012 | 2 | 0:40 | London, England | Bantamweight debut. |