The register
The register lists Waterstons Ltd in Durham, County Durham as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
At Companies House the business is Waterstons Limited (company number 03818424), a private limited company incorporated in 1999, 27 years ago. The registered office is at Liddon Court, Aykley Heads, Durham, DH1 5TS, DH1 5TS. Its filed activity puts it in it, software and media. It has traded under other names before, including Wilchap 121 Limited.
Holding a licence is the expensive, slow part done. For Waterstons Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.