US onions

Prices for the UK’s most popular grocery products have risen for the first time in over six months, new research claims to show.

Data from groceries online shopping and comparison website mySupermarket shows that an average basket of products increased slightly from £86.60 in May to £86.84 in June.

When compared to 12 months ago, however, the same basket in June 2014 was 5.5 per cent more expensive at £91.88.

MySupermarket’s Groceries Tracker monitors the cost of the same 35 most commonly bought grocery products.

The products that increased the most were onions (up 11 per cent), bananas (up 5 per cent) and carrots (up 4.3 per cent).

Two of the biggest fallers were broccoli (down 17.3 per cent) and mushrooms (down 3.7 per cent).

Gilad Simhony, CEO of mySupermarket, said: 'Although there has been only a slight increase, we are closely monitoring whether this marks the beginning of price increases at supermarkets, unseen during the recent period of supermarket price wars. Shoppers should keep an eye on whether their favourite products are in fact going up and whether they can be found cheaper elsewhere.'