1. Environment and Sustainability Institute; University of Exeter; Penryn Campus; Penryn TR10 9FE Cornwall UK
2. Centre for Ecology and Conservation; University of Exeter; Penryn Campus; Penryn TR10 9FE Cornwall UK
3. People's Trust for Endangered Species; 3 Cloisters House 8 Battersea Park Road London SW8 4BG UK
4. Forest Enterprise Scotland; Dumfries & Borders Forest District; Ae Village, Parkgate Dumfries DG1 1QB UK
5. Hallgarth; Leavening Malton YO17 9SA North Yorkshire UK