Organisations
- Centre for Life Sciences Modelling, University of Newcastle-upon-Tyne
- Countryside Council for Wales
- The Countryside Agency
- English Nature
- Environment Agency
- European Squirrel Initiative
- Forestry Commission
- Forestry Research
- Forestry Research on Grey Squirrels
- Jersey Environment Department, Channel Islands
- Joint Nature Conservation Committee
- The Mallerstang Red Squirrel Conservation Group
- Mammals Trust UK
- Northern Ireland Squirrel Forum
- People’s Trust for Endangered Species
- Scottish Natural Heritage
- Societas Europaea Mammalogica
- The Mammal Society
- Wildlife Trusts