The register
The register lists Plasticell Ltd in Stevenage 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 Plasticell Limited, number 04549890, incorporated 2002: 24 years of filings behind the name. Registered office: 5 New Street Square, London, EC4A 3TW, EC4A 3TW. By its SIC codes the business is in business services.
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.