The register
The register lists STJ Property Services Ltd in Romford 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 the business as Stj Property Services Ltd, company number 16089846, a private limited company. The registered office is at 27-43 Eastern Road, Romford, RM1 3NH, RM1 3NH. By its SIC codes the business is in business services.
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.