GLOUCESTERSHIRE Police are warning Cotswold residents about scam phone calls offering free grocery and petrol vouchers from Tesco and Morrisons.

The scam caller will often know the name and address of the person they are calling. Police said that there are many ways they could have obtained this information, e.g. electoral rolls and phone directories.

They are warning residents not to provide the caller with any further information and to report the incident to ActionFraud on 0300 123 2040