The register
The register lists Illumio UK Limited in Reading as a licensed sponsor on Global Business Mobility: Senior or Specialist Worker and Skilled Worker, 2 routes in all, and has done since at least 2026. The register records its rating as Worker (A rating).
Companies House lists it as Illumio UK Limited, number 09513008, incorporated 2015: 11 years of filings behind the name. Registered office: Suite 4, 7th Floor 50 Broadway, London, SW1H 0DB, SW1H 0DB. By its SIC codes the business is in business services.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Illumio UK Limited's own careers page and the job boards, and the answer changes with the season and the order book.