Government organisations
The Highways Agency
Transport Department of the Welsh Assembly Government
Consulting Engineers
Arup
Association of Consulting and Engineering
Atkins
Flint and Neill Partnership
Gifford and Partners
Halcrow Group
Hyder Consulting
Institution of Highways and Transportation
Maunsell (now Faber Maunsell)
Mott MacDonald
Mouchel (now Mouchel Parkman)
Owen Williams (now Amey Infrastructure)
PB (Parsons Brinckerhoff)
Tony Gee
Engineering Contractors and sub-contractors
Astra Zeneca
Balfour Beatty Construction
Christiani and Nielsen
Civil and Marine Slag Cement Ltd
Civil Engineering Contractors Association
Civil Engineering Contractors Association Southwest
Civil Engineering Contractors Association Wales
Concrete Bridge Development Group
Costain Group plc
VINCI Construction Grands Projets
Keller Ground Engineering
PSC Fressinett Ltd
Seacore Ltd
Professional Institutions and Others
Destination Bristol
Institution of Civil Engineers
Institution of Civil Engineering Surveyors
Institution of Civil Engineers Wales Cymru
IHT Foundation
Institution of Structural Engineers
Institution of Works and Highway Management
New Civil Engineer (EMAP Construct)
Rees Jeffreys Road Fund
Renishaw Ltd
Royal Academy of Engineering
Seabank Power Limited
South Gloucestershire Council
Terra Nitrogen Ltd