• 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
• CSG Telecom
  C S G House, 7 George Thomas Avenue, Brynmenyn, BRIDGEND, Mid Glamorgan, CF32 9SQ
• 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
• 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
• J V H Group Ltd
  Heol Mostyn, Village Farm Industrial Estate, Pyle, BRIDGEND, Mid Glamorgan, CF33 6BJ
• Next Generation Communications
  6a Market Street, EBBW VALE, Gwent, NP23 6HJ
• Police 5 Technologys
  Beaumount House, Corbetts Lane, CAERPHILLY, Mid Glamorgan, CF83 3HX
• Portway Business Soultions
  12 Maryport Road, CARDIFF, South Glamorgan, CF23 5JX
• Portway Telecom Ltd
  12 Maryport Road, CARDIFF, South Glamorgan, CF23 5JX
• 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
• Welcomm Services Ltd
  18 Heol Ganol, Sarn, BRIDGEND, Mid Glamorgan, CF32 9PG