Cabinets are entitled to do their business in private. I have no difficulty in supporting a proposition that Cabinet documents, narrowly drawn, would be kept secret for more than five years. A period of ten years is, perhaps, too long, but it should be something of that order. There is a real inhibition on people saying what they wish to say if they know it is going to be disclosed. I am one of those people who has an uneasy night's sleep on 31 December each year when I wonder what files will appear on 1 January containing things I wrote 30 years ago.