Do not send your BRP - you'll need to keep this as proof of identity. How to apply for a document to travel outside the UK if you're not British and you cannot use or get your own national passport.You must complete and submit these documents: Copy of your current and valid passport. Get set for your trip, with everything you need to know about travel documents and visas for adults, children and unaccompanied minors. Get details on passports, Customs, visas and health requirements for your international trips. Find out what travel documents can be used to apply for an ETIAS travel authorisation. Important information on travel documents for adults and children traveling within Canada, to the US and international countries. If you currently travel to the UK without a visa, you'll soon need an Electronic Travel Authorisation (ETA). You cannot submit your travel permit request to the U.S. government without completing and signing this form. You must be physically present in the United States when you file the Reentry Permit application and complete the biometrics services requirement.