OP
platty1005
If the lead could be used to connect to a class 1 appliance that does require earthing then it is correct to fail them. If the end connector is a 2 pole type that can only be connected to class 2 items then the leads are OK regardless of the fact there is a 13A 3 pin plug at the other end. Good quality class 2 leads often have a 13A plug top with a plastic earth pin 2 core flex and a two pole end connector.