The register
The register lists Squareup (UK) Ltd 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. The register records its rating as Worker (A rating).
Companies House lists it as Squareup (UK) Ltd., number 09023549, incorporated 2014: 12 years of filings behind the name. The registered office is at 6th Floor One London Wall, London, EC2Y 5EB, EC2Y 5EB. Its filed activity puts it in business services. It has traded under other names before, including Employee Services Professionals Ltd..
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for Squareup (UK) Ltd's own careers page and the job boards, and the answer changes with the season and the order book.