In the second debate of our series on GM Foods Professor Cathie Martin of the University of East Anglia and Editor-in-Chief of The Plant Cell, Dr Charlie Clutterbuck, Fellow in Food Policy, City University London; and Dr Rupert Read, Reader in the UEA School of Philosophy and Chair of the Green House think-tank. It was chaired by John Shrive. The discussion was recorded at the John Innes Centre in Norwich in December 2012.