Every year the C-B's spend one week living on £1-a-day each. This year there are only TWO people in the C-B house. So ... no economies of scale. All food £2-a-day. We're not allowed to use anything from the cupboards except salt and pepper. No one's allowed to slip us a biscuit or similar. We've got lentils. We've got white rice. We've got marge. We've got some tea bags. We're off.