The register
Thorn Security Limited, Sunbury On Thames, Middlesex, holds a Home Office sponsor licence covering 3 routes: Global Business Mobility: Graduate Trainee and 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 Temporary Worker (A rating), Worker (A rating).
At Companies House the business is Thorn Security Limited (company number 00728246), a private limited company incorporated in 1962, 64 years ago. The registered office is at Hanover House, Plane Tree Crescent, Feltham, Greater London, TW13 7BZ, TW13 7BZ. By its SIC codes the business is in manufacturing and engineering. It has traded under other names before, including Thorn Emi Protech Limited, Thorn Emi Fire Appliances Limited.
Holding a licence is the expensive, slow part done. For Thorn Security Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.