The register
The register lists Mama Calabar in London, Hendon 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 Mama Calabar Restaurant Limited, number 03438625, incorporated 1997: 29 years of filings behind the name. The registered office is at 38 Vivian Avenue, London, NW4 3XP, NW4 3XP. Its filed activity puts it 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.