The register
The register lists StackAdapt UK Limited in London 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. Its rating on the register is Worker (A rating).
Companies House lists it as Stackadapt UK Limited, number 12946782, incorporated 2020: 6 years of filings behind the name. Registered office: Second Floor, 15 Norton Folgate, London, E1 6DB, E1 6DB. By its SIC codes the business is in professional and technical services.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for StackAdapt UK Limited's own careers page and the job boards, and the answer changes with the season and the order book.