Tom Aspinall won the interim title in November 2023; Jon Jones defended his belt in November 2024
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.
