Manchester's Tom Aspinall has been upgraded to undisputed heavyweight champion as the UFC announced Jon Jones had officially retired.
The decision, delivered by Dana White after a UFC Fight Night in Azerbaijan, brings to an end seven months of uncertainty in the heavyweight division.
Aspinall is just the third Briton to become a UFC champion and spent 19 months as interim champion.
"Jon Jones called us last night and retired," White said.
"Jon Jones is officially retired. Tom Aspinall is the heavyweight champion of the UFC.
"Do I regret the time that I gave [Jones to decide]? Listen, if you look at what he's accomplished in the sport, no."
Jones, 37, claimed the heavyweight title in March 2023 and fought Stipe Miocic last November, despite Aspinall claiming the interim belt the year before.
Aspinall campaigned for a fight with Jones but the American decided against accepting the UFC's offer.
