The register
The register lists Corona Energy Limited in Watford as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Its rating on the register is Worker (A rating).
Corona Energy Limited is the registered name (Companies House number 03241012), a private limited company on the register since 1996. The registered office is at 1 More London Place, London, SE1 2AF, SE1 2AF. By its SIC codes the business is in professional and technical services. It has traded under other names before, including Aurora Energy Limited, Quantum Energy Group Limited.
Holding a licence is the expensive, slow part done. For Corona Energy Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.