NATIONAL RIVERS
NATIONAL TRUST
NORTH SCOTLAND WATER
NORTH SURREY WATER NORTHUMBRIAN WATER
NORTH WEST WATER
NUTTALL HYNES
ONSITE SURVEYS
PARRIPAK FOODS
PREMIER PERICLASE
PROSERVE LTD.
PURCELL MILLER TRITTON
REDRAG LOSS ASSESSORS LTD.
SCIENTIFIC PROTEIN INDUSTRIES
SCOTTISH HYDRO ELECTRIC
SCOTTISH POWER
SCOTTISH WATER
SEVERN TRENT
SOUTHERN WATER
SOUTH EAST WATER
SUBTERA LTD
TARMAC SERVICES
THAMES WATER UTILITIES
TILBURY DOUGLAS
UNITED UTILITIES
VAN OORD ACZ
WATFORD COUNCIL
WELSH WATER
WILLMOTT DIXON

DUBAI PETROLEUM CO.
DURKAN CONSTRUCTION
DUNSTABLE RUBBER
EAST SCOTLAND WATER
ENVIRONMENT AGENCY
ENVIRONMENTAL DRAINAGE SERVICES
EDMUND NUTTALL
FORD MOTOR COMPANY
GMR ENEGRY– INDIA
GRAHAM CONSTRUCTION
HALCROW GROUP
INTEGRATED ALLIANCE NORTH
INTRUSION PREPAKT
IRISH GLASS BOTTLE
J. MURPHY AND SONS
J.S.S.CARDOE
JARVIS CONSTRUCTION 
KARACHI WATER/SEWAGE
KMI PLUS
KNIGHTS GROUP INDUSTRIAL
LEAN AND HIGGIN
LUTON COUNCIL
MABEY CONSTRUCTION
MAUNSELL
MONTGOMERY WATSON
MORRISON CONSTRUCTION
MORRISON UTILITIES
MOTT MACDONALD
MOWLEMS

4 DELIVERY LTD
ALCAN INTERNATIONAL
ALLOTT & LOMAX
ANGLIAN WATER
AGRI – PETCO
ATKINS WATER
B.B.C.RESOURCES
BABTIES
BARDON AGGREGATES
BARHALE PLC
BECHTEL
BECHTEL-MORRISON JV
BELLWAY HOMES
BINNIE BLACK & VEATCH
BLACK, VEATCH, COSTAIN JV
BOVIS
BRITISH AVIATION AUTHORITY
BRITISH RAIL
BRITISH WATERWAYS
BVC
CANFAUD METALBOX
CARDOX INTERNATIONAL
CHARLES CHURCH
CHARLES HASWELL
CONDOR PRODUCTS
COSTAIN CONSTRUCTION
C.S.I. LTD.
DANIEL CONTRACTORS