The register
The register lists Greenfield School in Woking as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Greenfield School, number 02035304, incorporated 1986: 40 years of filings behind the name. The registered office is at Greenfield School, Old Woking Road, Woking, Surrey, GU22 8HY, GU22 8HY. By its SIC codes the business is in education.
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.