The register
The register lists SINE Digital Limited in London 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).
Sine Digital Limited is the registered name (Companies House number 10920162), a private limited company on the register since 2017. Registered office: 180 Strand, Floor 2, 1 Surrey Street, London, Greater London, WC2R 1EA, WC2R 1EA. By its SIC codes the business is in professional and technical services. It has traded under other names before, including Sine Music Limited, Sine Records 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.