The register
Impax Asset Management Group plc 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. The register records its rating as Worker (A rating).
Companies House lists it as Impax Asset Management Group PLC, number 03262305, incorporated 1996: 30 years of filings behind the name. The registered office is at 7th Floor 30 Panton Street, London, SW1Y 4AJ, SW1Y 4AJ. By its SIC codes the business is in professional and technical services. It has traded under other names before, including Impax Group PLC, Kern River PLC.
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.