The register
The register lists RenEco Ltd in Rushden, Northamptonshire 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).
Companies House lists it as Reneco Ltd, number 01760831, incorporated 1983: 43 years of filings behind the name. The registered office is at Goosey Lodge, Wymington, Nr Rushden, Northants, NN10 9LU, NN10 9LU. Its filed activity puts it in energy, water and waste. It has traded under other names before, including Ancillary Components Limited, Catchwall Limited.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.