The register
The register lists Rizing Limited in London as a licensed sponsor on Skilled Worker and Global Business Mobility: Senior or Specialist Worker, 2 routes in all, and has done since at least 2026. Rating on the current register: Worker (A rating).
At Companies House the business is Rizing Limited (company number 09376752), a private limited company incorporated in 2015, 11 years ago. Registered office: Kings Court, 185 Kings Road, Reading, Berkshire, RG1 4EX, RG1 4EX. Its filed activity puts it in it, software and media. It has traded under other names before, including 3D Results Limited, Alpha Vanta Limited.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.