http://www.dailymail.co.uk/news/article-1355055/Food-prices-fastest-rise-5-years-blow-families.html
At the risk of linking to the much-despised Daily Mail, please see the chart showing inflation in UK food prices. In the experience of those in the UK, are these prices believable? In the US, we tend not to include the price of food as a factor in inflation,
Food prices are rising, as are the profits of the big supermarkets (Tesco's last 12 month report was of a £3.4billion profit, post-tax I believe.), stuff like wheat is well known to be increasing massively in trade price, the problem with a report like that is that it is such a small fraction of what people buy, Sainsbury's is always more expensive than the likes of Tesco, Asda and Morrison's, so that's a bit of a weak comparison.
I can go to my independent greengrocers and save money on the same items, the inflation is driven by people's desire to shop in one place, the supermarkets have a massive stronghold in the UK, Tesco being the main one, in my area we have 8 Tesco outlets, 1 Sainsbury's, 1 Morrisons' and no Asda.
I like how the BRC bloke in that report says that the supermarkets have taken the brunt of the VAT rise, in reality I think this is an overstatement of how much of a difference it
should make, not to mention that the majority of the stuff people buy (the essentials) are VAT free, though what is VAT-applied and exempt in food stuffs is quite complex, but as a basic summary, unprocessed and essential food is exempt, the luxury, ready-to-eat, etc, is VAT applied, as a general rule of thumb, but not a definite rule.
The wastage in the UK food industry is one of the factor that drives the prices, this is driven by some of the draconian rules by the EU on the specs of fruit and veg. It's an immense problem and something the supermarkets and industry will do everything they can to not reveal how big it is, we could support a small country on the amount of food that is wasted before it reaches the shelves.
If people shop around, they can protect themselves from most of the rises, but the typical UK shopper likes the all in one place convenience, it's their decision, their time or saving, you don't get both.