The register
The register no longer lists Tessaract Technologies UK Limited in Farnham, Surrey; its last appearance was 30 October 2026. That is not a mark against it: licences lapse, names change, businesses merge. The register records its rating as Worker (A rating).
Companies House lists it as Tessaract Technologies UK Ltd, number 14067108, incorporated 2022: 4 years of filings behind the name. Registered office: Labs House, 15-19 Bloomsbury Way, London, WC1A 2TH, WC1A 2TH. Its filed activity puts it in it, software and media.
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.