British emergency passports (also known as Emergency Travel Documents (ETD)) are issued by British diplomatic posts to British nationals and unrepresented Commonwealth citizens for the purpose of urgent travel overseas with a maximum validity of nine months.

[1] However, for a British emergency passport to be issued to a non-British Commonwealth citizen, permission must first be obtained from the individual's home government.

The following information appears on the biodata page: The emergency passport can be used to make a single or return journey to the UK or another country of residence, via a maximum of five transit countries.

[4] The emergency passport is issued with a validity which is limited to the shortest time appropriate to the holder’s travel requirements whilst taking account of the transit and destination country requirements (for example, many countries require travel documents to have a minimum validity of six months).

The Foreign, Commonwealth and Development Office (FCDO) state that on applying for an Emergency Travel Document "You will be asked to provide an itinerary for your journey".