The register
The register lists ATC Systems Limited in Newtownabbey as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. Rating on the current register: Worker (A rating).
Atc Systems Limited is the registered name (Companies House number NI035553), a private limited company on the register since 1999. The registered office is at 3 Enterprise Way, Mallusk, Newtownabbey, Co Antrim, BT36 4EW, BT36 4EW. Its filed activity puts it in manufacturing and engineering. It has traded under other names before, including Carrikay Limited.
Holding a licence is the expensive, slow part done. For ATC Systems Limited the question each time is only whether the role and the pay fit the current rules, and that is checked per vacancy.