Professional Organisations
- Institution of Civil Engineers - www.ice.org.uk
- Institute of Ecology & Environmental Management - www.ieem.org.uk
- Institute of Environmental Management & Assessment - www.iema.net
Associate Organisations
- BREEAM - www.breeam.org
- CEEQUAL - www.ceequal.com
- CIRIA - www.ciria.org.uk
- Clear Environmental Consultants Ltd - www.clearltd.com
- Community Consultation - www.localdialogue.com
- Crane Environmental - www.crane-environmental.co.uk
- Green Roof Consultancy - www.greenroofconsultancy.com
- Livingroofs.org - www.livingroofs.org
- Temple Environmental - www.templegroup.co.uk
Wildlife Organisations
- Badger Trust - www.nfbg.org.uk
- Bat Conservation Trust - www.bats.org.uk
- Botanical Society of the British Isles - www.bsbi.org.uk
- Common Ground - www.commonground.org.uk
- Froglife - www.froglife.org
- Plantlife International - www.plantlife.org.uk
- Royal Society for the Protection of Birds - www.rspb.org.uk
- The Mammal Society - www.abdn.ac.uk/mammal
- The Wildlife Trusts - www.wildlifetrusts.org
Government Bodies
- Countryside Council for Wales - www.ccw.gov.uk
- Department for Environment, Farming and Rural Affairs - www.defra.gov.uk
- Environment & Heritage Service Northern Ireland - www.ehsni.gov.uk
- Environment Agency - www.environment-agency.gov.uk
- Greater London Authority - www.london.gov.uk
- Joint Nature Conservation Committee - www.jncc.gov.uk
- Natural England - www.naturalengland.org.uk
- Scottish Natural Heritage - www.snh.org.uk