1. Department of Zoology; University of Oxford; South Parks Road Oxford OX13PS UK
2. FAI Farms Ltd; The Field Station, Wytham, Oxford Oxfordshire OX2 8QJ UK
3. The Lakes Free Range Company Ltd; Meg Bank, Stainton Penrith CA11 0EE UK
4. Noble Foods Ltd; The Moor, Bilsthorpe Newark NG22 8TS UK