The register
The register lists Polymateria Limited in London 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).
At Companies House the business is Polymateria Limited (company number 09875556), a private limited company incorporated in 2015, 10 years ago. Registered office: First Floor, 5 Fleet Place, London, EC4M 7RD, EC4M 7RD. Its filed activity puts it in professional and technical services. It has traded under other names before, including Innovative Plastics 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.