The register
The register lists Colour Tone Masterbatch Ltd in Caerphilly 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 Colour Tone Masterbatch Limited, number 03176153, incorporated 1996: 30 years of filings behind the name. Registered office: Unit B Thornsett Industrial Estate, Birch Vale, High Peak, SK22 1AH, SK22 1AH. Its filed activity puts it in manufacturing and engineering.
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.