Telecommunications company

0-9

• 51º Limited

A - C

• Airwave Solutions Limited
• allpay Limited
• Affiniti Integrated Solutions Limited
• Affinity Water Limited
• Arqiva Communications Ltd

Arqiva Services Limited Arqiva Limited Anglian Water Services Ltd AT&T Global Network Services (UK) B.V. Atlas Communications NI Limited Bolt Pro Tem Limited Bournemouth & West Hampshire Water Plc Bristol Water Plc British Telecommunications plc British Sky Broadcasting Limited Bytel Networks Ltd BSkyB Telecommunications Services Limited Call Flow Solutions Limited Cable & Wireless UK Central North Sea Fibre Telecommunications Company Limited Centric Telco Ltd CityLink Telecommunications Limited CityFibre Metro Networks Limited Cogent Communications UK Ltd COLT Technology Services Concept Solutions People Ltd

D - F

Dwr Cymru Cyfyngedig EE Limited Eircom UK Ltd Energis Communications Ltd Energis Local Access Ltd The Environment Agency Equant UK ltd EU Networks Fiber UK Limited Eurobell (South West) Limited Eurobell (Sussex) Limited Eurobell (West Kent) Limited Euro Payphone Ltd FARICE hf. Faultbasic Ltd Fibernet UK Limited Fibrespan Limited FibreSpeed Limited Fibrewave Networks FLAG Atlantic UK Limited Fujitsu Services Limited

G - I

Gamma Telecom Holdings Ltd GeneSYS Telecommunications Limited Geo Metro Limited Geo Networks Limited Gigaclear Plc GT UK Ltd Hibernia Atlantic (UK) Limited Highlands and Islands Enterprise Hutchison 3G UK Limited Hyperoptic Ltd H2O Networks Group ICRON Network Limited Independent Fibre Networks Limited Independent Next Generation Networks Limited In Focus Public Networks Ltd Infolines Public Network Ltd (Code powers suspended) Internal Communication Systems Limited Internet Central Ltd Internet Airworks Ltd (now dissolved) Internet Connections Limited Interoute (i-21 Limited)

K to M

KDDI Europe Ltd KCOM Group Plc KPN EuroRings B.V. Lancaster University Network Services Limited Level 3 Communications Ltd Level 3 Communications UK Limited M3Com II Limited, Bermuda MDNX Enterprise Services Limited MLL Telecom Ltd MS3 Networks Ltd Mundio Mobile Limited

N to P

Neos Networks Ltd Network Rail Infrastructure Limited Northumbrian Water Limited NWP Street Ltd Orange Personal Communication Services Ltd Open Network Systems Limited Pipex Communications Business Solutions Limited Pipex Internet Limited

Q to S

Reach Europe Ltd Redcentric Communications Ltd Reliance FLAG Telecom Ireland Limited RSL Cityspace Limited Scottish Water Sea Fibre Networks Ltd Severn Trent Water Ltd Severn Trent Retail Services Limited Smallworld Media Communications Limited South East Water Plc Southern Water Ltd South West Water Ltd Sprintlink UK Ltd Spyder Facilities Limited SSE Telecommunications Limited Surf Telecoms Limited Subtopia Limited Sutton and East Surrey Water Plc

T - U

TalkTalk Communications Limited Tata Communications (UK) Limited Telecom New Zealand (UK) Licences Limited Telewest Limited Telefonica UK Limited TeliaSonera International Carrier UK Limited Thales Transport and Security Limited Thames Water Utilities Ltd The Wireless Infrastructure Company Limited The Wireless Asset Company Limited Telecommunications Wireless and Infrastructure Services Limited Thus plc TIBUS (trading as The Internet Business Limited) Timico Partner Services Limited Tiscali UK Limited Tweedwind Limited United Utilities Plc UK Broadband Limited

V - Z

• Veolia Water East Ltd

Verizon UK Ltd Viatel Infrastructure (UK) Limited Virgin Media Limited Virgin Media Wholesale Limited Vodafone Limited Vtesse Networks Ltd WarwickNet Ltd Wessex Water Services Ltd Wifinity Limited Wightfibe Limited Your Communications Ltd Yorkshire Water Service Ltd

• Zayo Group UK Limited