The register
The register lists comScore UK Ltd in London 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. The register records its rating as Worker (A rating).
At Companies House the business is Comscore UK Ltd (company number 05595713), a private limited company incorporated in 2005, 21 years ago. Registered office: 5 New Street Square, London, EC4A 3TW, EC4A 3TW. Its filed activity puts it in business services. It has traded under other names before, including Comscore Europe Ltd, M:metrics 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.