(1) Where a protected prisoner of war or a protected internee has been sentenced to death or to imprisonment for a term of two years or more, the time within which he must give notice of appeal or notice of his application for leave to appeal to the Court of Criminal Appeal, the High Court of Justiciary, or the Court of Criminal Appeal in Northern Ireland, as the case may be, shall, notwithstanding anything in the enactments relating to such appeals, be the period from the date of his conviction or, in the case of an appeal against sentence, of his sentence to the expiration of ten days after the date on which he receives a notice given—
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(a) in the case of a protected prisoner of war, by an officer of Her Majesty's forces;
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(b) in the case of a protected internee, by or on behalf of the governor of the prison in which he is confined,