If your passport is lost or stolen, you may complete the relevant form DEN1 and send it by post (Special delivery) together with a copy of your ID document to the following address:
Ufficio Passaporti
Denuncia Smarrimento/Furto Passaporto
Consulate General of Italy in London
Harp House, 83-86 Farringdon Street
London EC4A 4BL
The submission of the form is not intended to obtain the new document.