Updated 28 September 2010
- Adult Caddisfly Occurrence Scheme
- Angling Trust (including Fish Legal the legal arm of the Angling Trust in England)
- APEM Ltd
- Association of Rivers Trusts
- Atlantic Salmon Trust
- Aquascience
- Audley End Fly Fishers +
- Albury Anglers (Tillingbourne Riverfly Group) +
- Ballinderry Fish Hatchery +
- Biological Records Centre
- Birdsgrove Fly Fishing Club
- Bradan Aquasurveys Ltd.
- British Waterways
- Buglife - The Invertebrate Conservation Trust
- Calder & Colne Rivers Trust +
- Cambridge Trout Club +
- Canterbury and District Angling Association*
- Cardiff University Catchment Research Group
- Chess Valley Anglers
- Clyde River Foundation
- Conwy & Clywd Rivers Trust+
- Countryside Council for Wales
- Dan-y-Parc Fishery
- East Yorkshire Chalk Rivers Trust*
- Eden Rivers Trust +
- EFE & GB Nets
- Environment Agency
- Ephemeroptera Recording Scheme
- Field Studies Council
- Frensham Fly Fishers*
- Freshwater Biological Association
- FreshwaterLife
- Godalming Angling Society +
- Grayling Society
- Gresham Angling Society*
- Greywell Anglers +
- Gwent Angling Society
- Jardine Creative Angling Limited
- JETSET Trout in the classroom UK
- John Spedan Lewis Trust for the Advancement of Natural Sciences*
- Lancaster University Institute of the Environment, Philosophy and Public Policy
- LEAF (Linking Environment and Farming)
- Rivers Lugg and Arrow Fisheries Association*
- Manchester Anglers Association
- Nar Fishers +
- National Gamekeepers Organisation
- National Trust
- Natural England
- Natural History Museum
- Neath and Dulais Angling Club
- North Yorkshire Chalk Rivers Trust +
- Northern Ireland Environment Agency (AMI collaborator)
- Pang, Kennet & Lambourne FWAG +
- Pembrokeshire Rivers Trust +
- Peper Harrow Fly Fishers +
- Plecoptera Recording Scheme
- Portsmouth Services Fly Fishing Association*
- Rivers & Fisheries Trusts Scotland (AMI collaborator)
- Ribble Catchment Conservation Trust +
- River Erewash Foundation +
- Rivers Lugg and Arrow Fisheries Association
- Riverfly Recording Schemes
- Rossett & Gresford FFC +
- Rydale Anglers +
- Rhymney River Federation of Angling Clubs * (Rhymney & SE Wales Monitoring Gp)
- Salmon and Trout Association
- Services Dry Fly Fishing Association
- Sevenake Fly Fishers +
- Severn Rivers Trust +
- Solihul Fly Dressers
- South Cumbria Rivers Trust +
- South Wales Rivers Trust +
- SPRITE +
- Swale, Ure & Nidd S&TA Branch AMI Group*
- Taunton Fly Fishers +
- Teifi Rivers Invertebrate Monitorers* (Teifi Rivers Trust)
- Test and Itchen Association Ltd
- Tewin Fly Fishers +
- Trent Rivers Trust
- Tyne Rivers Trust +
- Trichoptera Recording Scheme
- Usk & Monnow +
- Wandle Piscators*
- Wessex Salmon Trust +
- West Country Rivers Trust +
- Wild Trout Trust
- Willowbrook Fly Fishers +
- Wilton Fly Fishing Club*
- Wiltshire Fishery Association
- Wiltshire Wildlife Trust +
- WWF-UK
- Wylye Fly Fishing Club
- Yorkshire Dales Rivers Trust *
* Partners with AMI Groups
+ AMI Groups
