The register
The register lists Jianchuan Ltd in London 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 Jianchuan Ltd (company number 09977980), a private limited company incorporated in 2016, 10 years ago. Registered office: 6 Union Street, London, SE1 1SZ, SE1 1SZ. Its filed activity puts it in property.
Holding a licence is the expensive, slow part done. For Jianchuan Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.