The register
Enstar (EU) 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. The register records its rating as Worker (A rating).
At Companies House the business is Enstar (EU) Limited (company number 03168082), a private limited company incorporated in 1996, 30 years ago. Registered office: 12th Floor 70 Mark Lane, London, EC3R 7NQ, EC3R 7NQ. By its SIC codes the business is in business services. It has traded under other names before, including Castlewood (EU) Ltd., Castlewood Insurance Services (UK) Limited.
For a candidate this means one less obstacle: Enstar (EU) Ltd already has the licence most employers would have to apply for. The rest is the ordinary job of getting the interview.