The register
The register lists S T Galleries Ltd in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as S T Galleries Ltd, number 07657669, incorporated 2011: 15 years of filings behind the name. Registered office: C/O Hilton Consulting Canalot Studios, 222 Kensal Road, London, W10 5BN, W10 5BN. By its SIC codes the business is in retail. It has traded under other names before, including Alicia David Contemporary Art Limited.
Holding a licence is the expensive, slow part done. For S T Galleries Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.