The register
The register lists Katalysys 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 Katalysys Ltd (company number 06595394), a private limited company incorporated in 2008, 18 years ago. The registered office is at 51 Moorgate, Beaumont Business Centres, London, EC2R 6LL, EC2R 6LL. Its filed activity puts it in business services.
Holding a licence is the expensive, slow part done. For Katalysys Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.