It shall be the duty of the governor of a civil prison, or, in so far as F1. . . Imprisonment and Detention Rules so provide, of the superintendent or other person in charge of a prison (not being an air-force prison) in a colony, to receive any person duly sent to that prison in pursuance of the F1. . . rules and to confine him until F1. . . the prisoner is discharged or delivered over in due course of law.

Where a person is in air-force custody in pursuance of an air-force sentence of imprisonment or detention, then on receipt of a written order in that behalf purporting to be signed by that person’s commanding officer it shall be the duty of any such governor, superintendent or other person as aforesaid, of the police officer in charge of a police station or of any person in charge of any other place in which prisoners may be lawfully confined (whether the station or place is in the United Kingdom or in a colony), to keep that person in custody for a period not exceeding seven days unless the said person is earlier discharged or delivered over in due course of law.