| Action on Elder Abuse | www.elderabuse.org.uk |
| ADAS | www.adas.co.uk |
| ADSM (Energy and Water Efficiency Experts) | www.adsm.com |
| Age Concern England | www.ace.org.uk |
| Albion Water Ltd | www.albion-water.com |
| American Water Works Association | www.awwa.org |
| American Water Works Association Research Foundation | www.awwarf.com |
| Anglian Water Services Ltd (part of awg plc) | www.anglianwater.co.uk |
| Association of Electricity Producers | www.aepuk.com |
| Association for Instrumentation Control Automation (GAMBICA) | www.gambica.org.uk |
| Association of Consulting Engineers (ACE) | www.acenet.co.uk |
| Association of Drainage Authorities (ADA) | www.ada.org.uk |
| Association of National Park Authorities (ANPA) | www.anpa.gov.uk |
| Association of Plumbing and Heating Contractors (APHC) | www.aphc.co.uk |
| Australian Water Association | www.wateraus.net.au |
| Austrian Association for Gas and Water Industries (OVGW) | www.ovgw.at |
| Belgian Federation for the Water Sector | www.belgaqua.be |
| BioIndustry Association (BIA) | www.bioindustry.org |
| Biotechnology and Biological Science Research Council (BBSRC) | www.bbsrc.ac.uk |
| Bournemouth & West Hampshire Water plc | www.bwhwater.co.uk |
| Bristol Water plc | www.bristolwater.co.uk |
| British Dental Association (BDA) | www.bda-dentistry.org.uk |
| British Geological Survey (BGS) | www.bgs.ac.uk |
| British Geotechnical Association (BGA) | www.britishgeotech.org.uk |
| British Hydrological Society (BHS) | www.hydrology.org.uk |
| British Medical Association (BMA) | www.bma.org.uk |
| British Resorts Association (BRA) | www.britishresorts.co.uk |
| British Retail Consortium (BRC) | www.brc.org.uk |
| British Soft Drinks Association | www.britishsoftdrinks.com |
| British Standards Institution (BSi) | www.bsi-global.com |
| British Telecom (BT) | www.bt.com |
| British Water | www.britishwater.co.uk |
| British Water Cooler Association | www.bwca.org.uk |
| British Waterways | www.britishwaterways.co.uk |
| Building Research Establishment (BRE) | www.bre.co.uk |
| Business in the Community (BiTC) | www.bitc.org.uk |
| Cabinet Office | www.cabinet-office.gov.uk |
| CABWI Awarding Body | www.cabwi.co.uk |
| Cambridge Water plc | www.cambridge-water.co.uk |
| Campaign to Protect Rural England (CPRE) | www.cpre.org.uk |
| Centre for Ecology and Hydrology (CEH) | www.ceh-nerc.ac.uk |
| Chartered Institute of Environmental Health | www.cieh.org.uk |
| Chartered Institution of Water and Environmental Management (CIWEM) | www.ciwem.org.uk |
| Chemical Industries Association | www.cia.org.uk |
| Citizens Advice | www.nacab.org.uk
www.adviceguide.org.uk |
| Commission for Social Care Inspection | www.carestandards.org.uk |
| Competition Commission | www.competition-commission.org.uk |
| Confederation of British Industry (CBI) | www.cbi.org.uk |
| Consumer Council for Water | www.ccwater.org.uk |
| Consumer Direct | www.consumerdirect.gov.uk |
| Consumers Association | www.which.net |
| Council for National Parks (CNP) | www.cnp.org.uk |
| Country Land & Business Association(CLA) | www.cla.org.uk |
| Countryside Council for Wales (Cyngor Cefn Gwlad Cymru) | www.ccw.gov.uk |
| Cranfield University Institute of Water and the Environment | www.silsoe.cranfield.ac.uk/iwe |
| Cranfield University School of Water Sciences | www.cranfield.ac.uk/sims/water |
| Crown Estate | www.crownestate.co.uk |