The register
The register lists Ithaca House Limited in London as a licensed sponsor on Creative Worker, an entry that goes back to at least 2026. Its rating on the register is Temporary Worker (A rating).
Companies House lists it as Ithaca House Limited, number 15971646, incorporated 2024: 2 years of filings behind the name. The registered office is at Flat 77 Philbeach Gardens 77 Philbeach Gardens, Flat 4, London, SW5 9EX, SW5 9EX. By its SIC codes the business is 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.