Built Heritage
- Council for British Archaeology
- English Heritage
- Historic Scotland
- NI Environment Agency
- The Heritage Council (Ireland)
- The National Trust for Ireland (An Taisce)
- The National Trust Northern Ireland
- Ulster Architectural Heritage Society
Community
- Castlerock Community Association
- Causeway Rural & Urban Network
- Community Northern Ireland
- North Antrim Community Network
- Northern Ireland Council for Voluntary Action
- Rural Community Network (NI)
Countryside & Rural Development
- Department of Agriculture & Rural Development
- Forest Service
- Irish Rural Link
- Natural England
- Royal Forestry Society
- Rural Development Council (Northern Ireland)
- Rural Support Northern Ireland
- Teagasc – The Irish Agriculture & Food Development Authority
- UK Department for Food, Environment & Rural Affairs
- Ulster Farmers Union
Countryside Recreation
- Cycle NI
- Sports Council for Northern Ireland
- Sustrans – National Cycle Network
- Outdoor Recreation NI (formerly called The Countryside Access and Activities Network)
Cultural Heritage
Funding Opportunities
- Arts Council of Northern Ireland
- Heritage Lottery
- International Fund for Ireland
- Interreg IVB Atlantic Area
- Invest Northern Ireland
- Special EU Programmes Body
Local Authorities
Natural Heritage
- Biodiversity Northern Ireland
- Europarc – protected areas
- Europarc Atlantic Isles Section
- Institute for European Environmental Policy
- Joint Nature Conservation Committee
- Marine Conservation Society
- National Association of AONBs
- National Biodiversity Network
- National Parks & Wildlife Service (Republic of Ireland)
- NI Environment Agency
- Northern Ireland Fungus Group
- Royal Society for the Protection of Birds
- Seawatch Foundation
- The Wildfowl & Wetlands Trust
- The Woodland Trust
- Ulster Museums Sciences Division
- Ulster Wildlife
- Unesco
- World Conservation Union
Northern Ireland Protected Areas
- Belfast Hills Partnership
- Lagan Valley Regional Park
- Lough Neagh Partnership
- Mourne Heritage Trust
- Royal Society for the Protection of Birds – Northern Ireland
- The National Trust Northern Ireland
- Ulster Wildlife
- Wildfowl Wetlands Trust
- Woodland Trust
Sustainable Development
- Conservation Volunteers Northern Ireland
- Enfo -Information on the Environment
- Green Alliance
- Irish Peatland Conservation Council
- keep britain tidy
- NI reed bed systems
- Northern Ireland Environment Link
- Republic of Ireland Environmental Protection Agency
- The Water Pollution Guide
- World Wide Fund for Nature (UK)
Sustainable Tourism
- Green Tourism Business Scheme – Scotland
- International Centre for Responsible Tourism
- The International Ecotourism Society
- Tourism & The Environment Forum – Scotland
- United Nations Environment Programme – Tourism