The register
G4S Corporate Services Limited, 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. Rating on the current register: Worker (A rating).
At Companies House the business is G4S Corporate Services Limited (company number 07409677), a private limited company incorporated in 2010, 16 years ago. Registered office: 6th Floor 50 Broadway, London, SW1H 0DB, SW1H 0DB. Its filed activity puts it in professional and technical services.
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.