The register
Gemsstock Limited is licensed to sponsor workers on Skilled Worker. The organisation is based in London and has held its place on the register since at least 2026. The register records its rating as Worker (A rating).
Companies House lists it as Gemsstock Limited, number 08694463, incorporated 2013: 13 years of filings behind the name. The registered office is at 4th Floor 18 Henrietta Street, London, WC2E 8QH, WC2E 8QH. Its filed activity puts it in finance and insurance.
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.