The register
Sedex Information Exchange Limited is licensed to sponsor on Global Business Mobility: Senior or Specialist Worker and Skilled Worker and Global Business Mobility: Graduate Trainee. Its entry on the register dates back to at least 2026, and the organisation is based in London. Rating on the current register: Worker (A rating), Temporary Worker (A rating).
Companies House lists it as Sedex Information Exchange Limited, number 14708906, incorporated 2023: 3 years of filings behind the name. The registered office is at 18 St. Swithin's Lane, London, EC4N 8AD, EC4N 8AD. Its filed activity puts it in it, software and media. It has traded under other names before, including Sedex Esg Platform Ltd.
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.