Ultimate Challenge MMA (also referred to as UCMMA) is a mixed martial arts promotion based in the United Kingdom.

Later that same year Dave O'Donnell, one of the original owners of Cage Rage, created Ultimate Challenge UK.

[11] On May 28, 2012, UCMMA was featured on BBC One programme How To Beat Pain, which was presented by Greg Whyte and Jack Krindler.

[12] After White Collar MMA 6 (WCMMA), UK casting call were taken place at the Troxy for a new American reality show - Warrior Island.

Dave O'Donnell hosted the casting call at the request by Global Proving Ground (GPG) President, James Jefferson.

On October 25 it was announced that, along with BAMMA and Cage Warriors, that UCMMA have united with The Centre of Health and Human Performance in London to launched SAFE MMA, a nonprofit organization established to improve the safety of MMA fighters in the U.K. Chief among the organization's plans is a centralized and confidential database for fighter medical records.

SAFE MMA, which officially launches Jan. 1 2013, also will provide affordable, standardized blood and medical tests for all registered fighters, as well as advice from leading world experts in sports medicine, according to today's announcement.

It also allows the company to reach the type of audience that dislikes the use of small 6oz MMA gloves, grappling and striking to a grounded opponent.

[25][26] The concept to Ultimate Ball came to Dave O'Donnell around the time Cage Rage was at its highest peak, but had to wait until UCMMA grew bigger to make the sport happen.