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 thinktank. It was chaired by John Shrive. The discussion was recorded at the John Innes Centre in Norwich in December 2012.