The register
Institutional Shareholder Services UK Limited 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. Rating on the current register: Worker (A rating).
Companies House lists it as Institutional Shareholder Services UK Limited, number 04759928, incorporated 2003: 23 years of filings behind the name. The registered office is at No. 1 London Bridge Fourth Floor, West Building, London, SE1 9BG, SE1 9BG. Its filed activity puts it in it, software and media. It has traded under other names before, including Research, Recommendations and Electronic Voting Limited, Bealaw (661) Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Institutional Shareholder Services UK Limited's own careers page and the job boards, and the answer changes with the season and the order book.