• A D N Telecom
  Britannia Centre, 6 CWRT Bryn Y Grug, BLACKWOOD, Gwent, NP12 1SP
• Addcall
  76 Lascelles Drive, Pontprennau, CARDIFF, South Glamorgan, CF23 8NZ
• BT Local Business
  17 Gold Tops, NEWPORT, Gwent, NP20 4PH
• Car Call
  Kings Head Buildings, Oak Street, ABERTILLERY, Gwent, NP13 1TN
• Cardiff Cabling Services Ltd
  6 Kember Close, ST. Mellons, CARDIFF, South Glamorgan, CF3 0NW
• Cogent Defence Systems
  Meadows Road, Queensway Meadows Industrial E, NEWPORT, Gwent, NP19 4SS
• Comtec Network Solutions Ltd
  1 Church Street, MERTHYR TYDFIL, Mid Glamorgan, CF47 0BA
• Comtec Telecom & Data
  1 Church Street, MERTHYR TYDFIL, Mid Glamorgan, CF47 0BA
• E R H Communications Ltd
  Grange Industrial Estate, CWMBRAN, Gwent, NP44 8HQ
• Eq8 Telecom
  Pontsychan House Abersychan Industrial Estate, Old Road, Abersychan, PONTYPOOL, Gwent, NP4 7BA
• Gottalife Training & Development
  19-20 Pentonville, NEWPORT, Gwent, NP20 5HB
• M I D Electrical Services
  11 Greenhill Road, Griffithstown, PONTYPOOL, Gwent, NP4 5BE
• Midwest Telecom
  7a Nevill Street, ABERGAVENNY, Gwent, NP7 5AA
• NTL
  On Line House The Avenue, Cleppa Park, Coedkernew, NEWPORT, Gwent, NP10 8UG
• Next Generation Communications
  6a Market Street, EBBW VALE, Gwent, NP23 6HJ
• P Lewin
  Tre Elidyr, Llanover, ABERGAVENNY, Gwent, NP7 9HB
• Police 5 Technologys
  Beaumount House, Corbetts Lane, CAERPHILLY, Mid Glamorgan, CF83 3HX
• Quadriga Group
  1 Courthouse Street, PONTYPRIDD, Mid Glamorgan, CF37 1JW
• R.P.K Communications
  37 Blandon Way, CARDIFF, South Glamorgan, CF14 1EH
• RBF Comms. Services Ltd
  Islwyn Workshops, Pontymister Industrial Estate, Risca, NEWPORT, Gwent, NP11 6NP
• Valley Communications Associates
  50a Beaufort Street, Brynmawr, EBBW VALE, Gwent, NP23 4AG