The register
The register lists Matchroom Boxing Limited in Brentwood as a licensed sponsor on International Sportsperson, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
At Companies House the business is Matchroom Boxing Limited (company number 10451332), a private limited company incorporated in 2016, 10 years ago. The registered office is at Mascalls Mascalls Lane, Great Warley, Brentwood, Essex, CM14 5LJ, CM14 5LJ. By its SIC codes the business is in it, software and media.
For a candidate this means one less obstacle: Matchroom Boxing Limited already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.