The time during which an appellant, after admission to bail under section 238 of this Act, is at large pending the determination of his appeal shall not be reckoned as part of any term of imprisonment under his sentence.

The time during which an appellant is in custody pending the determination of his appeal shall, subject to any direction which the High Court may give to the contrary, be reckoned as part of any term of imprisonment under his sentence.

Imprisonment of an appellant shall, subject to any direction which the High Court may give to the contrary, be deemed to run, if the appellant is in custody, as from the date on which the sentence was passed, and to begin to run or to be resumed, if the appellant is not in custody, as from the date on which he is received into prison under the sentence.

In this section references to a prison and imprisonment shall include respectively references to a Borstal institution, detention centre or place of safety and to detention in such institution, centre or place of safety, and any reference to a sentence shall be construed as a reference to a sentence passed by the court imposing sentence or by the High Court on appeal as the case may require.