The register
The register lists Trihaven Management Limited in Mayfair 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 Trihaven Management Limited, number 13757004, incorporated 2021: 4 years of filings behind the name. The registered office is at Level 1, Devonshire House, One Mayfair Place, London, Greater London, W1J 8AJ, W1J 8AJ. By its SIC codes the business is in business services.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.