The register
System1 Group PLC, 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).
At Companies House the business is System1 Group PLC (company number 05940040), a public limited company incorporated in 2006, 20 years ago. The registered office is at 4 More London Riverside, London, SE1 2AU, SE1 2AU. Its filed activity puts it in professional and technical services. It has traded under other names before, including Brainjuicer Group PLC, Brainjuicer Group Limited.
Holding a licence is the expensive, slow part done. For System1 Group PLC the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.