The register
The register lists Oppenheimer Generations Services UK Limited in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
Oppenheimer Generations Services UK Limited is the registered name (Companies House number 11011473), a private limited company on the register since 2017. The registered office is at 1 Charterhouse Street, London, EC1N 6SA, EC1N 6SA. By its SIC codes the business is in professional and technical services. It has traded under other names before, including Oppenheimer Generations Custodian UK Limited.
Holding a licence is the expensive, slow part done. For Oppenheimer Generations Services UK Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.