Heidi Urwin1, David Wright2, Michael Twigg3, Norma McGough1. 1. Coeliac UK, 3rd Floor, Apollo Centre, Desborough Avenue, High Wycombe, Bucks, HP11 2QW, UK. 2. School of Pharmacy, University of East Anglia, Norwich, NR4 7JT, UK. d.j.wright@uea.ac.uk. 3. School of Pharmacy, University of East Anglia, Norwich, NR4 7JT, UK.