British Citizens must be in possession of a valid 10-year passport. If you are 16 or over and haven't yet got a passport, our recommendation is that you should apply for one at least 6 weeks before your holiday. Everybody, including children and new born babies (who were not on a valid passport before 5th October 1998) must have their own individual passport to travel abroad. Children under 16 years who were included on an adult's passport may not travel unless accompanied by that adult. Written authorisation from the other parent may be required if a child is travelling with one parent only.
At the current time British Citizens do not require a visa to visit Italy. Passports and visa requirements may change so you should check the up-to-date position in good time for departure and ensure you allow enough time to obtain a visa if required.
If you are not a British Citizen, you should check visa regulations with the Italian Consulate by phoning 020 7235 9371 or on their website and any other consulates if you are travelling through other countries by road, rail or cruise.