Amey Highways

Marconi Transportation

ARTTIC (Brussels)

Mason Communications Ltd

Arup Transportation Planning

Ministry of Defence

Bedfordshire County Council

Ministry of Transport & Communications, Finland

Birmingham City Council

Mouchel International Consultants

Birmingham University

MVA

Brighton and Hove City Council

North-East Traveline Consortium

British Telecom

North of Scotland Water Authority

Buckinghamshire County Council

Northern Lighthouse Board

Cambridge City Council

Norwest Holst

Carillion

Ove Arup and Partners

Carl Bro IBI Intelligent Systems

Owen Williams Consultants

Charles Rivers Associates, Boston, USA

Plymouth City Council

Clear Zones (DTI)

POLIS Network of Cities and Regions (Brussels)

Construction Industry Council

Recall plc

Coventry City Council

RAC Foundation

David Webster Ltd

Rees Jeffreys Road Fund

Department for Transport (and predecessors)

Royal Borough of Kensington & Chelsea

Dornier SystemConsult GmbH

Scott Wilson (Scotland) Ltd

East of Scotland Water Authority

Scott Wilson Kirkpatrick and Partners

EBRD (European Bank for Reconstruction and Development)

Scottish Executive

ECV (European Construction Ventures Ltd)

Slough Estates

English Heritage

Solihull Borough Council

European Commission - DG Information Society (and predecessors)

Somerset County Council

European Commission - DG Transport and Energy

Sureway Parking Services

Faber Maunsell (and predecessors)

Techspan Systems PLC

GEC-Marconi Communications Ltd

Teletech Communications Ltd (Hong Kong)

Gibb

Thames Water

Guildford Borough Council

The Post Office

Halcrow

'Transit'

Highways Agency

Transpomatica Consultants Ltd

Hyder Consulting

Transport for London

Institute of Logistics & Transport

Transport for London Street Management

Institution of Highways and Transportation

Transport Planning International

Irish Rail

TRL

ITS United Kingdom

University of Highlands and Islands

Japanese Infrastructure Development Institute

University of Surrey

Kingsmith Ltd (Hong Kong)

University of Westminster

Korea Road & Transportation Association

Water UK

Laing Technology

Welsh Water

London Borough of Bromley

West of Scotland Water Authority

London Borough of Hammersmith & Fulham

World Bank

Luton Borough Council

WSP