Mansukh Waru, responding to the report in my last column over Ukash voucher fraud, knew instinctively that something was amiss when three blokes came in together at his Ministore at Sutton, Surrey.

He says: "One was on the phone, one was just walking around the shop, and the other one asked for £100 Ukash voucher. I said 'Give me the cash first'. He offered a credit card, but I said 'Cash only'. I was suspicious because of the amount and because they came in together."

They left and that was the end of it. It certainly supports Ukash's advice in the last issue: "Always take the cash before producing the Ukash voucher."