Prices have gone up on some items, other items have had packet sizes shrink and other items have not changed at all so it will really depend on how your shop breaks down.
My gut feeling is that fresh green veg is up around 10-15%, no change on frozen. Meat and fish apart from chicken seems to be up 10-20%. Dairy, eggs, root veg and some fruit seems the same, imported fruit such as strawberries and blueberries are up.
Bread my husband makes, flour is a bit more expensive but not a huge amount. Cleaning and other household items seem the same. Petrol is up a lot, £1.20 a few months ago to £1.46 last week.
From what I gather ready meals and other processed food, sauces in jars etc. Are up due to increases in both labour and transport costs, as is alcohol, although we don't drink at home.
It looks like a real mixed bag, people who eat a lot of meat and imported food could be looking at a 15-20% increase over the last six months, other might only be facing a rise of a few percent.