@kentindell my data can not on its own. However, for basic groceries, i.e. milk, specific meats, some fruits, another governmental org recently released the prices the grocery chains pay the producers. In that case, it's the stores that did the gouging.
We do observe stagnant/decreased year-over-year profits for grocery chains in Austria as well. But there's a big but :)
You see, their operating expanses have not increased dramatically. What has increased are their "investments".
@kentindell where "investments" are things like building new stores or parking the money in financial assets. Austria has the highest density of grocery stores in all of Europe. There's absolutely no need for this density.
This little trick allows them to lower their official "profit" numbers in their financial reports.
The UK fucked itself with Brexit when it comes to food prices, so your situation may actually be caused by the price increases of out of country producers.
@kentindell iirc, the UK sources a lot of food from countries like Spain. With Brexit, that became significantly more expensive. Not an expert on that tho, take this with a table spoon of salt.