The register
The register lists Ethiks Site Services in Doncaster 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).
Companies House lists it as Ethiks Site Services Ltd, number 10755925, incorporated 2017: 9 years of filings behind the name. Registered office: 167-169 Great Portland Street, 5th Floor, London, W1W 5PF, W1W 5PF. By its SIC codes the business is in business services. It has traded under other names before, including Ethik Site Services Ltd, SW Projects Ltd.
Holding a licence is the expensive, slow part done. For Ethiks Site Services the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.