4.—(1) Except as provided by Article 5 a person aged 16 years or over who disembarks or embarks in the United Kingdom shall, unless he has a right of abode there under section 2 of the Immigration Act 1971 and produces a current passport issued by the Government of the United Kingdom not acting on behalf of another Government, produce to an Immigration Officer, if required a landing card or embarkation card, as the case may be, duly completed.
(2) The card shall be in such from as the Secretary of state may direct, and it shall be supplied by the owners or agents of the ship or aircraft concerned.