The register
Ernst & Young is licensed to sponsor on Global Business Mobility: Senior or Specialist Worker and Global Business Mobility: Graduate Trainee 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), Temporary Worker (A rating).
At Companies House the business is Ernst & Young Limited (company number 05458987), a private limited company incorporated in 2005, 21 years ago. The registered office is at 1 More London Place, London, SE1 2AF, SE1 2AF. By its SIC codes the business is in business services. It has traded under other names before, including Ernst and Young 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.