The register
Regnum Ltd is licensed to sponsor on Global Business Mobility: Senior or Specialist Worker and Skilled Worker. Its entry on the register dates back to at least 2026, and the organisation is based in London. Its rating on the register is Worker (A rating).
Companies House lists it as Regnum Limited, number 05145864, incorporated 2004: 22 years of filings behind the name. Registered office: C/O Opet International Ltd 3rd Floor, 35 Dover Street, London, W1S 4NQ, W1S 4NQ. Its filed activity puts it in property.
Holding a licence is the expensive, slow part done. For Regnum Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.