The register
The register lists Grill'ish Romford Ltd in Romford as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Grill'ish Romford Ltd is the registered name (Companies House number 14112601), a private limited company on the register since 2022. The registered office is at 2nd Floor, 137 High Street, Brentwood, CM14 4RZ, CM14 4RZ. By its SIC codes the business is in hospitality.
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.