1. Environment Agency; Red Kite House, Howberry Park Wallingford OX10 8BD UK
2. Institute of Biological and Environmental Sciences, School of Biological Sciences, University of Aberdeen; 23 St Machar Drive, Room G45 Aberdeen AB24 3UU UK
3. Science Laboratories, Department of Earth Sciences; Durham University; Elvet Hill Durham DH1 3LE UK
4. The James Hutton Institute; Craigiebuckler Aberdeen AB15 8QH UK
5. ADAS Ltd, Gleadthorpe Research Centre; Meden Vale Mansfield NG20 9PF UK