Sir; In a week when much ire has been expressed about the government's new supermarket code of practice, I would like to complain about much more mundane matters. Please, please Sainsbury, can you stop your constant moving of products round your Nine Elms lane store? I understand that you would like me to wander round interminably looking for the ham in what is now the sauces section, or searching for butter on what is now the desserts counter, in the hope of encouraging me to make more impulse buys, but all it does is encourage me to try another supermarket. Let's drop the cynical manipulation of us poor shoppers and make all our lives a little happier. Unhappy shopper London {{LETTERS }}