The register
Proof London Limited, London, holds a Home Office sponsor licence on the Global Business Mobility: Senior or Specialist Worker route, and has been on the register since at least 2026. Rating on the current register: Worker (A rating).
Companies House lists it as Proof London Limited, number 08027005, incorporated 2012: 14 years of filings behind the name. The registered office is at 2 Leman Street, London, E1W 9US, E1W 9US. Its filed activity puts it in business services. It has traded under other names before, including Continental Shelf 557 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.