Proving that shoppers who just fill up their trolley at one supermarket, as all the supermarkets love them to, are seriously paying over the odds, we recently did a quick comparison of prices on just two very basic fresh items.

At budget store Aldi a large swede, and a large head of broccoli were both available at 39pence, against a smaller swede at nearby Sainsburys for 89pence (or 128% more) where a smaller head of broccoli was 99pence (or 154% more)

Investment bank UBS has warned British shoppers that the supermarkets are raising food prices faster than inflation.