The register
The register lists Isabel Mayfair Limited in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Isabel Mayfair Limited is the registered name (Companies House number 10094002), a private limited company on the register since 2016. The registered office is at 26b Albemarle Street, London, W1S 4HY, W1S 4HY. By its SIC codes the business is in hospitality.
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.