The register
The register lists Richardson Supply Company Ltd in London, County (optional) as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
At Companies House the business is Richardson Supply Company Limited (company number 01724671), a private limited company incorporated in 1983, 43 years ago. The registered office is at 64 Sprowston Mews, London, E7 9AE, E7 9AE. Its filed activity puts it in wholesale. It has traded under other names before, including Tontane Limited.
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.