The register
The register lists Jhonstone Convenience Store Ltd in Johnstone 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 Jhonstone Convenience Store Ltd, number SC708256, incorporated 2021: 5 years of filings behind the name. Registered office: 19 High Street, Johnstone, Renfrewshire, PA5 8JU, PA5 8JU. By its SIC codes the business is in retail.
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.