• Airtalk plc
  24c Grange Street, KILMARNOCK, Ayrshire, KA1 2AR
• Halo Communications
  Moorfield Indust Estate, Gatehead, KILMARNOCK, Ayrshire, KA2 0AG
• Star Specialist Systems
  22 Mcgowan Street, PAISLEY, Renfrewshire, PA3 1QL
• Telecom Service Centres Ltd
  Bute Business Park, Barone Road, Rothesay, ISLE OF BUTE, Isle of Bute, PA20 0DY
• The Phoneman
  Ramoy Business Centre, 4 Broomlands Street, PAISLEY, Renfrewshire, PA1 2LR