The register
The register lists J&S Kitchen LTD in London as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
J&S Kitchen Limited is the registered name (Companies House number 13522977), a private limited company on the register since 2021. Registered office: Loh Japandi Kitchen, 228 Bishopsgate, London, EC2M 4QD, EC2M 4QD. 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.