The register
The register lists JCK Ltd in Colnbrook, Berkshire 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 Jck Limited, number 04836027, incorporated 2003: 23 years of filings behind the name. Registered office: 628 London Road, Slough, SL3 8QH, SL3 8QH. Its filed activity puts it in construction. It has traded under other names before, including Jck Electrical Limited.
What the licence tells a candidate is that the door is not locked. Whether it is open this month is a question for JCK Ltd's own careers page and the job boards, and the answer changes with the season and the order book.