3M
Abrasive Technology
Acorn Web Offset Ltd
Advance Security
AEA Technology
Agelef Shipping Co. (London) Ltd
Air BP
Alpha Flights
Applied Bio Systems
Arco
Armstrong Metal Ceilings
Arrow Electronics
Artemis Funds
Association of London Government
BAE Systems
Befesa
Berkshire Record office
Bibby Line
BK Universal
Blankley Estates
Boots the Chemist
BP Chemicals
Brandt Solids Control
Brett Aggregates
Bridge 86
Bridon Ropes
British Energy
British Nuclear Group
British Pipeline Agency
Britvic
Canary Wharf Construction
Caprice Holdings
Carrillion
Carson Industries
Castrol
Cedo
Cemex
Chemson
Chemtura Europe Limited
Coca Cola
Congenco
CCLRC
Cruickshank’s
D & S Engineering Facilities Ltd
De La Rue
Detica
Drambuie
Duracell
DS Smith Plc
Eaton Electrical
Eli Lilly
Emcor Facilities Services
EMS
Entek
Environment Agency
Esso Petroleum
Equip Technology
E2V Technologies
Expedite PFM
Fassett
Fibercore
Fingal Aviation
Fusion Automation
Freshfield Brickworks
Freudenberg
G4S
Gala Group
GE
Gomer Press
Goodrich Power Systems
Hanson
Hanson Brick
Health Protection Agency
Heathrow Hydrant Operating Company
Heraus Quartz
Hillingdon Homes
H.M.C
Hobbs The Printers
HTS Lane End
Isaac Newton Telescopes – La Palma
INEOUS Nitriles
ISG Interiors
ITW Foils
Jabil
Johnson Matthey Catalysts
JRH Biosciences Ltd

Kitsons Environmental Limited
Keble College
Knauf
KPMF
L’Oreal
Lafarge Ready Mix
Lafarge Roofing
Lafarge Aggregates
Lakeland Ltd
Land & Water
Linpac Plastics
London Waste
The London Borough of Redbridge
Lowestoft College
Manning House Ltd
Marconi
Marshalls
Meachers Transport
Metronet
The Medical Research Council
M&J Seafood
M.K/Novar
MSI Forks
NCEC
(National Chemical Emergency Centre)
NHS
NIBSC (National Institute for Biological Standards Control)
NIPPON GOHSEI
Nominet
North Air
NTT Europe Online Limited
Occular Sciences
Outokumpu
Pilkington Special Glass
P.M.E/Carilion
Premier Foods
Print Pack
Qinetiq
Red Bull Racing
Reyovac
Richard Lees Steel Decking
Ridegons
Rio Tinto
RMS Gas Engineering
Rockwood Pigments
Ryobi Aluminium Castings
Saint Gobain
Sapphire Networks – Gibraltar
Scania
Science & Technology Facilities Council
Selex Galileo
Sensient Colors
Shell Aviation
Shell International Petroleum Company Ltd
Shred-it
Siemens
Simpson Strong-tie
Solartron Mobrey
Solvay Chemicals
St Ives Andover
Stagecoach Super Trams
Star Energy
Sudexo
Summerlease
Sungard
Tarmac Group
Tarmac Top Floor
Tesco
Thermofisher Scientific
Texaco
The Britten Pears Foundation
Three Rivers District Council
Trader Media
Trench
T.R.L
Tronic
Turner Powertrain Systems
TUV NEL Ltd
United Closure & Plastics
Vitriton
Waters
Weir Group
West Sussex County Council
Whale Tankers
Whitburn Leisure
William Hare
Woodbury Chilcott
Xerox