The register
Adthena Ltd, London, holds a Home Office sponsor licence covering 2 routes: Global Business Mobility: Senior or Specialist Worker and Skilled Worker. It has been on the register since at least 2026. Its rating on the register is Worker (A rating).
Adthena Ltd is the registered name (Companies House number 08171866), a private limited company on the register since 2012. Registered office: 30 Churchill Place, London, E14 5RE, E14 5RE. Its filed activity puts it in it, software and media.
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.