The Extradition (Tokyo Convention) Order 1997

Article 5

1.  The provisions of this chapter shall not apply to offences and acts committed or about to be committed by a person on board an aircraft in flight in the airspace of the State of registration or over the high seas or any other area outside the territory of any State unless the last point of take-off or the next point of intended landing is situated in a State other than that of registration, or the aircraft subsequently flies in the airspace of a State other than that of registration with such persons still on board.

2.  Notwithstanding the provisions of Article 1, paragraph 3, an aircraft shall, for the purposes of this chapter, be considered to be in flight at any time from the moment when all its external doors are closed following embarkation until the moment when any such door is opened for disembarkation. In the case of a forced landing, the provisions of this chapter shall continue to apply with respect to offences and acts committed on board until competent authorities of a State take over responsibility for the aircraft and for the persons and property on board.