The register
The register lists Szerelmey Ltd in London 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).
Szerelmey Limited is the registered name (Companies House number 01948091), a private limited company on the register since 1985. The registered office is at 369 Kennington Lane, Vauxhall, London, SE11 5QY, SE11 5QY. Its filed activity puts it in construction. It has traded under other names before, including South East Stone (london) Limited, London Stone Limited.
Holding a licence is the expensive, slow part done. For Szerelmey Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.