Live Q&A: Nick Herbert

With food and the environment in the spotlight after calls for the UK to grow more food , contemplate GM crops and set up a supermarket ombudsman , we're joined this week for a live web chat by the shadow environment secretary, Nick Herbert . The Tory MP for Arundel and South Downs used a major farming conference last week to prevent supermarkets using their power to squeeze profit margins from farmers. Tomorrow, Thursday 14 January, Herbert will be online here from 1-2pm to answer your questions. Whatever you want to ask about food and the environment – from local food and genetically-modified crops to his Labour counterpart Hilary Benn's record and Conservative policies – post your questions in the comments below. Please note we'll be treating anything not about food and the environment as off topic.