Turn your gas barbecue on to high and allow to heat up whilst you are preparing the scallops for cooking.
If you are using a charcoal barbecue you will know when it is hot enough when you can only hold your hand over it about 5 inches above the grill for 2 seconds.
Take one slice of the prosciutto and cut in half lengthwise then fold in half and wrap it around the sides of a scallop.
You need to make sure that the ends of the prosciutto overlap and then thread it on to a skewer.
Do the same for the other pieces of prosciutto and the scallops.
Next take the olive oil and drizzle it lightly over the scallops and then squeeze some lemon juice over them.
Then season with the freshly ground black pepper.
Then place on the barbecue to cook.
Cook on each side for about 3 minutes or until you see the flesh of the scallops has turned opaque.
Remove from barbecue place on a clean plate with some lemon wedges and serve to your guests.