The register
The register lists Sole Rep Ltd in London as a licensed sponsor on Creative Worker, an entry that goes back to at least 2026. Its rating on the register is Temporary Worker (A rating).
At Companies House the business is Sole Rep Ltd (company number 11435281), a private limited company incorporated in 2018, 8 years ago. Registered office: 55b Ossington Street, London, W2 4LY, W2 4LY. By its SIC codes the business is in arts, sport and leisure.
Holding a licence is the expensive, slow part done. For Sole Rep Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.