If you are travelling internationally, a valid passport is normally required.
For some countries your passport will need to be valid for at least six months after your intended return and you may also need a visa.
Before travelling you should always check your destination country's entry requirements and allow enough time to renew your passport and/or apply for a visa at the relevant embassy or consulate.
Confirm the entry requirements of the country you are visiting in our destination guides.
Travel to the USA from a visa waiver country
All travellers from visa waiver countries now require travel authorisation in advance, in addition to having a machine-readable passport. The application process is online and run by the US Department of Homeland Security.
Passports do get lost and although it will take time getting a replacement, you can make life easier by taking photocopies with you. It may also be worth carrying additional photographic ID separate from your passport.
If your passport is lost or stolen you must report it to the UK Passport Service by calling their Adviceline on +44 (0)871 875 6859.