Each year, thousands of trolleys are taken from stores and then dumped. The cost of this runs to hundreds of thousands of pounds, which we all eventually pay for.

Stores could have a system to recover these without cost. All that is required is for people to be asked to call the relevant store when a discarded trolley is located.

In return, when the person calls the store, they should be told they will receive a "reward" after giving out the location.

What is the "no cost" reward? Well, for Sainsbury's, people would be asked for their name and Nectar card number so, when they next go to the store, they can be identified and given a reasonable number of free points.

Other stores can do the same with their cards. If the caller doesn't have one, this will be the incentive to get one.

How would the trolley be recovered? These stores have delivery vans to those ordering by telephone, PC etc.

These vans can be fitted with a simple "hook rack" at the rear, which the trolley can be hooked on to. So simple.

-R Moores, Brighton