I have noticed the shelves are full but not much variety of goods, so a big long fridge is full but has only 20 different products in it.
At sainsbury on saturday there was 8 feet of shelf with one type of orange juice on it
Could it be that they are learning from Lidl & Aldi, cutting down on the number of products and buying more cheaply from the supplier of the ones they do stock because they can buy larger quantities?