The register
The register lists Cert'n'fase Limited in Southam, Warwickshire 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 Cert'n'fase Limited, number 06184342, incorporated 2007: 19 years of filings behind the name. The registered office is at Nelson House, 2 Hamilton Terrace, Leamington Spa, CV32 4LY, CV32 4LY. Its filed activity puts it in manufacturing.
Holding a licence is the expensive, slow part done. For Cert'n'fase Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.