5.—(1) An aircraft (other than an aircraft permitted by or under this Order to fly without being registered) shall not fly unless it bears painted thereon or affixed thereto, in the manner required by the law of the country in which it is registered, the nationality and registration marks required by that law.
(2) The marks to be borne by aircraft registered in the United Kingdom shall comply with Part B of Schedule 1 to this Order.
(3) Subject to paragraph (4), an aircraft shall not bear any marks which purport to indicate:
(a)that the aircraft is registered in a country in which it is not in fact registered; or
(b)that the aircraft is a State aircraft of a particular country if it is not in fact such an aircraft, unless the appropriate authority of that country has sanctioned the bearing of such marks.
(4) Marks approved by the Authority for the purposes of flight in accordance with the “B Conditions” contained in Schedule 2 to this Order shall be deemed not to purport to indicate that the aircraft is registered in a country in which it is not in fact registered.