The register
The register lists OCLC (UK) Limited in Sheffield as a licensed sponsor on Global Business Mobility: Senior or Specialist Worker and Skilled Worker, 2 routes in all, and has done since at least 2026. Its rating on the register is Worker (A rating).
Companies House lists it as Oclc (UK) Limited, number 00498573, incorporated 1951: 75 years of filings behind the name. Registered office: Citygate, 8 St.Mary's Gate, Sheffield, S1 4LW, S1 4LW. Its filed activity puts it in it, software and media. It has traded under other names before, including Oclc Pica Limited, Fretwell-downing Informatics 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.