Britain is now the most obese country in western Europe. Two-thirds of us are already overweight and there's no doubt that our poor diet and lack of exercise is slowly killing us, as well as crippling the NHS. After smoking, obesity is the next biggest cause of premature death in the UK. Hugh Fearnley-Whittingstall is on a mission to try and do something about it. In this new series, he pushes some of the biggest food companies and restaurant chains to become more transparent about what they are selling and he's asks the government what they are doing to tackle this health crisis. Hugh's also sees if it is possible to change the eating habits of a whole city by challenging the people of Newcastle to lose 100,000lbs in a year.