Fact file

• Currently around 100,000 trolleys are stolen from supermarkets across the UK every year, with each shopping trolley costing an average of £80.
• Many supermarkets now employ a pound coin deposit system to ensure trolleys are returned to their proper place.
• Some stores have even pioneered an expensive infra-red immobiliser on their trolleys. Such developments will no doubt duly impact the cost of foodstuffs within the store.