I would be interested in your story of this Italian, who I am sure would have come to this country as a POW. He may have been captured in Spain or around the Mediterranean. His details as a POW would be in the Admiralty records at the National Archives - ADM103 contains all the registers of prisoners in all the depots.
The 60th recruited extensively in all the prison depots, recruiting Germans, Dutch, Poles and Italians. Perhaps the information you already have would give a clue as to where he was housed as a prisoner, or where he was taken captive.