I think that is exactly the point Shalloran, welcome by the way!
It's important to remember we don't actually "save" ANY money when shopping. You may spend less, but often when you see a lot of things on your usual list a lot cheaper, you may throw in the extra "luxury" item or two, so you find your usual spend stays about the same. I know I am terrifically guilty of this. Especially on the two for one offers, when I tend to put four things in as it makes sense to me that I am "paying for two anyway!"
The supermarket cutting prices is needed and necessary. However what is more needed and necessary is a MASSIVE cut in domestic fuel bills. They are the what cripples many people financially. The 10% reduction by British Gas announced this week was laughable, bearing in mind we have all paid 35% more over the winter for our gas.
So in effect it is still a 25% rise. At a time when natural gas costs have fallen dramatically.
Have fun shopping!