| A.B. Rhead Associates |
Gas Transportation Company (GTC) |
O’Neill Project Services |
| ADM Oilseed Processing |
Gaz de France Generation |
Potterton Commercial |
| Advantica |
Grontmij |
Peel Holdings |
| Aqueous Solutions |
Humber Energy |
Prinovis |
| Atkins |
Huntsman Tioxide |
RJ Utility Services |
| BASF |
I & H Brown |
Rolls Royce Power Development Ltd |
| B C Dyson Eng |
Imerys Minerals |
Rotherham Borough Council |
| Biofuels Corporation |
Ineos |
RSK Group of Companies |
| BOC Gases |
Jersey Gas |
Saltend Cogeneration Company Ltd |
| BPA |
LÍHoist |
Scotia Gas Networks |
| Corus Engineering Steels |
Manx Gas |
Scottish and Southern Energy |
| Degussa |
Mitsubishi Power Systems |
SEEDA |
| EGS |
Morgan Est |
Shanahan Engineering |
| Entec |
Morrison Construction Services |
Solvent Resource Management (SRM) |
| Eon |
Mouchel Parkman |
Stanningley Engineering |
| Erith |
Murphy Pipelines |
United Utilities |
| Fiorentini |
National Grid Gas |
VHE |
| Fortum |
Northern Energy Connections |
Wilcocks |
| Fluon |
Northern Gas Networks |
Worley Parsons Komex |
| Fulcrum Connections |
National Grid Property Holdings |
WSP |
| Guardian Industries |
Npower Cogen |
White Young Green Environmental |
