The register
The register lists William Hill in Leeds, West Yorkshire as a licensed sponsor on Skilled Worker and Global Business Mobility: Senior or Specialist Worker, 2 routes in all, and has done since at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as William Hill Limited, number 04212563, incorporated 2001: 25 years of filings behind the name. Registered office: 1 Bedford Avenue, London, WC1B 3AU, WC1B 3AU. Its filed activity puts it in arts, sport and leisure. It has traded under other names before, including William Hill PLC, William Hill Limited.
Holding a licence is the expensive, slow part done. For William Hill the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.