Shoppers who steal items when using self-scan checkouts are costing retailers more than £200m a year.

A poll by security company G4S found 7% of adults had failed to scan the barcode of an item when using self-scan checkouts.

"While retailers will be pleased that shoppers are taking advantage of these new self-service technologies, this survey shows that they'll have to address this new threat from self-service scamming,” said Douglas Greenwell from G4S.