Symology Ltd - Infrastructure Asset Management Solutions for Highways, Land and Property, Structures, Public Lighting and Distributed Networks

AboveNet Communications

Anglian Water

Balfour Beatty Utilities Ltd

Barhale Construction

Bournemouth and West Hampshire Water Plc

Colt Telecommunications

Custom Antenna Systems

Data Techniques

ES Pipelines

Electricity North West Ltd

Elm Surfacing

Energetics Networked Energy

Fibrespan

Fin Telecom

Flexicomms Ltd

Fulcrum

Gas Transportation Company

Gauge Communication Ltd

Global Crossing

H2O Networks

Hollybox (Sky Easynet)

Independent Pipelines Ltd

Instalcom

Internal Communication Systems Ltd

J B Riney & Co Ltd

Laing O’Rourke

Level 3 Communications

Magdalene Services

Morgan Sindall (Infrastructure) plc

Morrison Utility Services

Murrill Construction

N and T Contractors

National Grid Gas and National Grid Electric

North Midland Construction Ltd

Northern Gas Networks Ltd

Northern Ireland Electricity

Northern Ireland Water

O2

Optilan UK Ltd

Orange

Portsmouth Water Ltd

Scottish Power

Scottish and Southern Energy plc (Scotia Gas)

Smallworld

South Staffordshire Water PLC

South Yorkshire PTE

St Clements Services Ltd

Sutton and East Surrey Water plc

T-Mobile (UK) Limited

Tarmac

Thames Water Utilities Ltd

United Utilities (Water & Electric)

Verizon Business

Vodaphone

Vtesse Networks

Wales and West Utilities Ltd