The register
CLS Holdings PLC, London, holds a Home Office sponsor licence on the Skilled Worker route, and has been on the register since at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Cls Holdings PLC, number 02714781, incorporated 1992: 34 years of filings behind the name. The registered office is at 16 Tinworth Street, London, SE11 5AL, SE11 5AL. Its filed activity puts it in professional and technical services. It has traded under other names before, including Hadmarn Limited.
Holding a licence is the expensive, slow part done. For CLS Holdings PLC the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.