ABB O & M Services Ltd.

AMEC Marine/Tunnelling

Adams Hydraulic

Alfred McAlpine

Allerdale Borough Council

Askam Construction Ltd.

Associated British Ports

Apem Research Ltd.

Bachy Soletanche Ltd.

Balfour Kilpatrick

B.B.C. Productions

Bay Towage

Bechtel Water Technology

Bethell Civil Engineering Ltd.

Border Construction Group

Bordern Decorative Products

British Gas Exploration Ltd.

Biwater Valves

Birse Construction

British Nuclear Fuels Ltd.

BS Shippimg Services

Carmet Tug Company Ltd.

Costain Engineering Ltd.

Cheetham Hill Construction.

ChiRex (Annan) Ltd.

Cumbria County Council

Danisco Paper Ltd.

D.C.T. Civil Engineering Ltd.

Dew Group Ltd.

Environmental Agency

Glaxo Wellcome

Gleeson Group PLC.

Ham International Dredging

Harbour & General

Howard Smith Towing Ltd.

Henry Boot Ltd.

Hurstwood Development Ltd.

Holland Dredging  (UK) Ltd.

Hyder Utilities Ltd.

Invert Water Treatment Ltd.

James Fisher & Sons Ltd.

J Murphy & Sons

Kvaerner Construction Ltd.

Lakeland Power Ltd.

Lancashire County Council

Planned Maintenance Ltd.

Marconi Marine

Miller Construction

North West Water Ltd.

Norgen Hydro Power

Norwest Holst

Mowlem Construction Ltd

OnSite

Robert McAlpine

Roletec Engineering

R.T.James Consulting Eng.

Scott Ltd.

Shell UK Ltd.

Sir William Arrol

Smit Tac B.V.

Stevenson Clarke Shipping

Thermal Detection Ltd.

T.K.Robinsons & Sons

U.K. Construction Co. Ltd.

Van Oord ACZ Dredging

Westminster Dredging Co. Ltd.

Workington Port

WS Atkins Ltd.

Yorkshire Water