The register
The register lists Proteo Ltd in Norwich 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).
At Companies House the business is Proteo Limited (company number 04630809), a private limited company incorporated in 2003, 23 years ago. The registered office is at 82a James Carter Road, Mildenhall, Suffolk, IP28 7DE, IP28 7DE. By its SIC codes the business is in manufacturing and engineering. It has traded under other names before, including P1 Technology Partners Limited.
Holding a licence is the expensive, slow part done. For Proteo Ltd the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.