Food prices have risen by nearly 6% in the first five months of the year, bringing the average price of a weekly shopping bill to £136. The soaring prices has added £514m to the cost of the UK's monthly groceries bill, squeezing the amount consumers have to spend on leisure activities. The research by Verdict Consulting found that Britons spend 13 pence of every pound on grocery shopping. Neil Saunders, consulting director of Verdict, said: "Food shopping is something most people do regularly, so they immediately notice increases in prices more than they do in other areas. "For many, the price of the weekly food shop is the real measure of inflation - it's what they react to when they make decisions about the household budget and what to spend on other things." Some product prices were shown to have risen more acutely than others, with the cost of fresh fruit and vegetables jumping by 15.9% and meat and fish up 7%. The report forecast that food price inflation would remain strong for the rest of 2008 and was likely to persist into 2009. Saunders said: "There is very little sign that the price of food is going to moderate or fall. "The price increase is partly a result of global demand outstripping supply and there is very little that can be done to remedy that imbalance over the medium term."