The register
The register lists GBSS Gardians Ltd in London, England 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).
Companies House lists it as Gbss Guardians Ltd, number 08845078, incorporated 2014: 12 years of filings behind the name. Registered office: 124 City Road, London, EC1V 2NX, EC1V 2NX. Its filed activity puts it in hospitality.
Holding a licence is the expensive, slow part done. For GBSS Gardians Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.