• A T L Telecommunications Ltd
  Cypress Drive, St Mellons, CARDIFF, South Glamorgan, CF3 0EG
• Alcatel Networks Ltd
  Coldra Wood, Chepstow Road, NEWPORT, Gwent, NP18 2YB
• Data Telecommunication
  Coldra Wood, Chepstow Road, NEWPORT, Gwent, NP18 2YB
• Discount Payphones
  71 New Road, Deri, BARGOED, Mid Glamorgan, CF81 9GL
• James Williams Communications
  3 The Beeches, Beech Grove, St. Brides Wentlooge, NEWPORT, Gwent, NP10 8TD
• Kaykel Communications
  41 Clare Street, MERTHYR TYDFIL, Mid Glamorgan, CF47 0YN
• Kaykel Static Control Products
  41 Clare Street, MERTHYR TYDFIL, Mid Glamorgan, CF47 0YN
• Marconi Interactive Systems
  Llantrisant Business Park, Llantrisant, PONTYCLUN, Mid Glamorgan, CF72 8LF
• Ofs
  Raglan House, 6-8 William Brown Close, Llantarnam Industrial Park, CWMBRAN, Gwent, NP44 3AB
• Panasonic Communications Company (U.K.) Ltd
  Pencarn Way, Duffryn, NEWPORT, Gwent, NP10 8YE
• Philip Morgan
  12 Old Church Road, CARDIFF, South Glamorgan, CF14 1AE
• Portman Electronics Ltd
  159 Commercial Road, NEWPORT, Gwent, NP20 2PJ
• Portman Telecom
  159 Commercial Road, NEWPORT, Gwent, NP20 2PJ
• Sintec Business Solutions Ltd
  Fairoak Business Centre, 15-17 Church Road, NEWPORT, Gwent, NP19 7EJ
• Solectron
  Chapel Farm Industrial Estate, Cwmcarn, Cross Keys, NEWPORT, Gwent, NP11 7ZB
• Sproutt Ltd
  Tredomen Business & Technology Centre, Tredomen Industrial Park, Ystrad Mynach, HENGOED, Mid Glamorgan, CF82 7FN
• Swan Electronics Manufacturing Solutions
  S P Williams, Glyncoed, Llanhilleth, ABERTILLERY, Gwent, NP13 2HT
• Xbridge Services Ltd
  Suflex Estate, Newport Road, Risca, NEWPORT, Gwent, NP11 6YD