I have noticed the costs, especially on meat and I have looked at the things I buy and made some changes.
I also stock up on things like 4 packs of beans and tinned tomatoes when they are on offer, buying 6 packs at a time! They all get stored in the garage.
I have looked at the things we buy and removed certain things. I've also looked at food which we often waste (eg cottage cheese) and, as I hate wasting food, I've stopped buying it.
I buy seasonal fruit and veg as much as possible - unless I really really really fancy some cherries I won't buy them.
I only buy bogof items if I need them and they won't go off.
I plan meals and buy for them.
I don't buy crisps/biscuits/cakes, not even for syns - I let my daughter bake for her packed lunch if she wants them.
I have looked in depth at where my money goes in Tesco and I've reduced the amount I spend on food quite significantly. We've all had to tighten our belts recently!
I still insist on 3 things though - free range chicken and eggs and organic milk, I don't care what this costs, I'll still buy them.