Platinum
|
| Bauer Technologies Ltd | | Highways Agency |
| Northern Ireland Housing Executive | | TTL |
| Welsh Health Estates | | |
Gold
|
| Aggregate Industries UK Ltd | | AMEC Power and Process Europe |
| ARCADIS AYH plc | | Architecture MK |
| Arup | | Atkins Limited |
| Balfour Beatty Major Projects | | Balfour Beatty Regional Civil Eng. |
| Bechtel Ltd | | Birse Civils Limited |
| Birse Metro Limited | | Bolton Metro Borough Council |
| Bridgend County Borough Council | | British Energy |
| Cambridgeshire County Council | | Capita Symonds Ltd |
| Carillion Plc | | CCS Group PLC |
| Cheshire County Council | | City of Westminster |
| CLM Delivery Partner | | Costain Limited |
| Davis Langdon LLP | | Deane Public Works Limited |
| Deptartment of Health ProCure21 | | Derby City Council |
| DFPNI | | Doncaster Metropolitan Borough Council |
| Dundee City Council | | Family Mosaic |
| Farrans (Construction) Ltd | | Fitzpatrick Contractors Ltd |
| Framatome ANP | | Galliford Try |
| Glasgow City Council | | Gotch Saunders and Surridge LLP |
| Gwynedd Consultancy | | Health Facilities Scotland |
| Hyder Consulting Engineers | | Interserve Project Services Limited |
| J Murphy & Sons | | Jackson Civil Engineering Limited |
| Lagan Construction Ltd | | Laing O'Rourke |
| Land Engineering (Scotland) Ltd | | Leicester City Council |
| Lincolnshire County Council | | London Area Procurement Network |
| Magnox Electric Ltd (North Region) | | Magnox Electric Ltd (North Region) |
| May Gurney | | Morgan Est Plc |
| National Grid Gas plc | | Newham University Hospital NHS Trust |
| NOVARTIS PHARMACEUTICALS LTD | | Osborne Clarke |
| Parsons Brinckerhoff Limited | | R A Gerrard Ltd |
| RedRay Consulting Limited | | Rowecord Engineering Ltd |
| RPS Consulting Engineers | | RWE Innogy plc |
| Sheffield Design and Project Management | | Skanska Construction UK |
| SLR Consulting Limited | | South Lanarkshire Council |
| South West Water | | Surrey County Council |
| Taylor Woodrow Construction Ltd | | Telereal Services Ltd |
| The Coal Authority | | Transport for London RNM - Major Project |
| Tube Lines Ltd | | UK Research Councils |
| UKAEA | | Veolia Water Outsourcing Ltd |
| Wates Interiors | | |
Silver
|
| Anglian Water Services Ltd | | AWE Plc |
| BAA plc | | Balfour Beatty Infrastructure Services |
| BAM Construct UK | | BAM Nuttall Ltd |
| Bevan Brittan | | Borough of Poole |
| Brewer Consulting | | Carl Bro Group Ltd |
| CH2M HILL, Tideway Tunnel Delivery Team | | Commercial Management Consultants Ltd |
| Corderoy | | Cornwall County Council |
| Darlington Borough Council | | David Adamson & Partners |
| Department for Regional Development | | Dept. for Regional Development (NI) - Water Service |
| DLA Piper UK LLP | | East Riding of Yorkshire Council |
| EC Harris | | Edmund Nuttall Limited |
| Environment Agency | | Faber Maunsell Ltd |
| Faithful & Gould | | Feltham Construction Ltd |
| Franklin & Andrews Limited | | Gleeds |
| Gloucestershire County Council | | Gravatom Engineering Systems Ltd |
| GVE Commercial Solutions | | Halcrow Group Limited |
| Hammonds | | Hampshire County Council |
| Hanson Contracting | | Health Care Projects |
| Hunter & Partners | | J N Bentley Ltd |
| Jacobs Engineering UK Ltd | | Lancashire County Council Environment Directorate |
| Lancashire County CouncilEnvironment Directorate | | Leeds Metropolitan University |
| London Borough of Merton | | London Borough of Merton |
| Magnox Electric Ltd (South Region) | | Mansell Build Ltd |
| Mansell plc | | Mansell Plc |
| Miles Miles Ltd | | Moreton Hayward Ltd |
| Morgan Estate Rail Ltd | | Mott MacDonald |
| Mouchel Parkman Services Ltd | | MWH |
| Nabarro LLP | | National Roads Authority |
| NBS | | Neath Port Talbot County Borough Council |
| Norfolk County Council | | North Devon Homes Limited |
| Northumbrian Water Limited | | Office of Government Commerce |
| Oxfordshire County Council | | PD Teesport |
| Prysmian Cables & Systems Ltd | | Renfrewshire Council - Roads Division |
| RJ McLeod (Contractors) Ltd. | | ROK Prime Contracting Ltd |
| Rotherham Metropolitan Borough Council | | Royal Borough of Kingston |
| RWE Nukem Limited | | Scott Wilson |
| Shepherd Construction Ltd | | Siemens Water Technologies, Memcor Ltd |
| Stent Foundations Ltd | | Suffolk County Council |
| Swansea Housing Association Ltd | | Thames Water |
| The National Assembly for Wales | | The Villages Housing Association Ltd |
| TPS Schal | | Turner & Townsend |
| Volker Rail | | Volker Stevin Ltd |
| Voltcom ltd | | Walter Thompson (Contractors) Limited |
| Wardell Armstrong LLP | | Warwickshire County Council |
| Wedlake Bell | | West Sussex County Council |
| Westminster Dredging Co. Ltd. | | Wheeler Group Consultancy |
| Worcestershire County Council | | Wrekin Construction Company Limited |
| Yorkshire Water Services Ltd | | |
Bronze
|
| A B Rhead & Associates Limited | | A D Architects Ltd |
| Alway Associates (London) Limited | | AM Moran Ltd |
| AMEC | | Anderson Strathern |
| Andrew Boyle Associates Ltd | | Aniscon Consulting |
| Anthony Collins Solicitors | | Aqua Consultants Limited |
| BAM Contractors | | Basil Wyatt & Sons Ltd |
| Bezzant Limited | | BIW Technologies |
| Black & Veatch Ltd | | Bluestone Surveying Limited |
| Bowdon Consulting Limited | | Bowen & Partners |
| Bristol International Airport | | British Waterways |
| Brodies LLP | | Bunton Consulting |
| C Le Masurier | | Carillion Transport Projects |
| Castle Hayes Pursey LLP | | CCM Associates |
| Censeo Contract Consultants Ltd | | Chandler KBS |
| Chelmer Housing Partnership | | City University School of Law |
| Clarke Willmott Solicitors | | Collyer Bristow LLP |
| Commercial Solutions | | Construction Management Services |
| Contracts Consultancy Ltd | | Costain (COGAP) |
| Costain Limited | | Ctori Construction Consultants Limited |
| Devon County Council | | Doig & Smith |
| Duffy Civil Engineering | | Dundas & Wilson |
| E.ON UK | | Earth Tech Engineering Ltd |
| East Lothian Council | | EMCOR Rail Limited |
| Engineering Contract Strategies | | Entec UK Ltd |
| Ernest J Bayton | | Essex County Council |
| Eta Projects | | Evans & Peck (Hong Kong Ltd) |
| Eversheds | | Fenwick Elliott LLP |
| Fone-Alarm Installations Ltd | | Frank Griffiths Associates |
| Freedom Group | | Fugro Seacore Ltd |
| G F Tomlinson Building Limited | | Geldards LLP |
| GHA Livigunn | | Gleeds Energy |
| GMH Planning Ltd | | Goring Berry LLP |
| Graduate Engineer | | Granshaw Limited |
| Hammonds | | Hannah Reed and Associates Ltd |
| Harelaw.co.uk | | Haus Ltd |
| Hobson & Porter Ltd. | | Ingenium Design & Engineering Ltd |
| J Breheny Contracts Ltd | | Jarvis Rail Limited |
| JBN | | JCP Consulting Ltd |
| JMP Consultants | | John F Hunt Demolition |
| John Newson & Co | | John Papworth Limited |
| JT Mackley & Co Ltd | | K & L Gates |
| K & L Gates | | Kate Williams - Barrister |
| Keegans Ltd | | Keepmoat Ltd |
| Kent County Council | | Keppie Design Ltd |
| Killoughery Construction Ltd | | Knowles Ltd |
| Land and Water Group | | Land and Water Group |
| Lexius Contract Services | | Lincolnshire County Council |
| Lovells International Law Firm | | Lovells International Law Firm |
| Magnox Electric Ltd (North Region) | | Marina Developments Limited |
| McClure Naismith | | MJA Consulting |
| Mooney Kelly Cost Consultants | | NEC Panel |
| NG Bailey & Co Ltd | | NHS Purchasing & Supply Agency |
| Norman Rourke Pryme LLP | | Norton Rose |
| Nottinghamshire County Council | | Nuclear Decommissioning Authority |
| O'Hare Engineering Ltd | | patronus consulting limited |
| pdConsult Ltd | | Pellings |
| Peter Brett Associates | | Peter J Douglas Engineering Limited |
| Posford Haskoning Limited | | Promanex |
| Provian Construction Ltd | | PTR Services Ltd |
| Pyments Ltd | | Quantum Consult Ltd |
| Quigg Golden Ltd | | Ramsden Enterprises Ltd |
| Ramskill Martin Limited | | Ridge and Partners LLP |
| Ridgeway Consulting Ltd | | Rivers Agency |
| Robert J. Wren Associates | | Roger Lewendon Associates |
| Royal Haskoning | | S&P Ltd |
| Simmons & Simmons | | Somerset Consult |
| South Gloucestershire Council | | South Lanarkshire Council |
| Specialist Engineering Contractors Group | | Speechly Bircham LLP |
| Synergie Scotland Ltd | | Systech Legal Services Limited |
| Telford Hart Associates | | Tendring District Council |
| TH Michaels (Construction) Ltd | | The Clarkson Alliance Ltd |
| The Highland Council | | The Orange Partnership Limited |
| Thomas Telford Ltd | | Thompson Landscapes LTD |
| Thurlow Associates | | time to plan ltd |
| Trowers & Hamlins | | Tubelines Projects Directorate |
| Tuffin Ferraby & Taylor | | University of Salford |
| Uskmouth Power Company Ltd | | Van Oord UK Ltd |
| VHE Construction plc | | Viridor Waste Management Ltd |
| W B Simpson & Sons (Tiling) Ltd | | Watson Burton |
| Watson Burton LLP | | West Berkshire Council |
| West Yorkshire Police | | Westinghouse Electric Belgium S.A. |
| Westinghouse Rail Systems | | Windsor Contract Management |
| WS Atkins | | WSP Civils Ltd |
| WYG | | WYG Management Services Ltd |
International
|
| Al Nekhreh Contracting LLC | | Burhan Holding Company |
| Cansult Maunsell | | Connell Wagner |
| Construction Legal Services | | First Line Consultancy |
| Forstech Nigeria Limited | | Fulton Hogan |
| Geodynamics Consultancy Ltd | | Gustav Pegel & Sohn LLC |
| Hawkins Construction Ltd | | Hazelton Law |
| HPCL-MITTAL ENERGY LTD | | MDA Consulting (Pty) Limited |
| Meridian Energy Ltd | | National Bureau of Statistics |
| Nuclear Consultants International | | Pellias Consulting |
| Simpson Grierson | | SKM - Sinclair Knight Merz |
| Taupo District Council | | Tiefenthaler Consulting |
| Tyco New Zealand trading as Wormald | | |