The register
GAM (U.K.) Limited is licensed to sponsor on Skilled Worker and Global Business Mobility: Senior or Specialist Worker. Its entry on the register dates back to at least 2026, and the organisation is based in London. Rating on the current register: Worker (A rating).
Companies House lists it as Gam (U.K.) Limited, number 01664573, incorporated 1982: 44 years of filings behind the name. The registered office is at 8 Finsbury Circus, London, EC2M 7GB, EC2M 7GB. Its filed activity puts it in finance and insurance. It has traded under other names before, including Global Asset Management (U.K.) Limited, St. James's Management Services Limited.
Holding a licence is the expensive, slow part done. For GAM (U.K.) Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.