Shoppers are charged more on islands
Channel Island shoppers have been charged a third more for basic groceries than people in the UK.
The Channel Islands Competition and Regulatory Authorities (CICRA) compared prices in Channel Islands' shops with stores in the UK.
CICRA found Jersey consumers paid 32% more per shop and Guernsey consumers paid 36% more.
CICRA said: "The price difference is a consequence of the absence of cheaper UK supermarkets."
Chief executive of the regulatory body, Andrew Riseley, said: "On the like-for-like comparison, the prices do not appear to be significantly more expensive than in the same brand of supermarket in the UK - the price difference is likely to be less than 10%.
"Those on the tightest budgets in the Channel Islands are disadvantaged."
Mr Riseley has suggested that the high cost of food is not necessarily due to freight costs, but is a result of island wages for staff being higher than the UK.
Guernsey shoppers would like cheaper supermarkets. Martin Bishop said he "would like to see an Aldi."
Stacey Le Page said: "There may be this idea that we are a cash-rich island but in reality a lot more of us are being squeezed with cost of living going up and wages not competing and so we are wanting our money to go further."
Peter le Page did not think island prices were too excessive.
"Waitrose and M&S are good value for money or even cheaper than other places, depending upon what you are buying," he said.
A shopper from Alderney said that food there was "even more expensive" and he would like a price comparison for Sark and Alderney.