(1) A revocation order may be made--(a) whether or not the offender has been called on to appear before the Parole Authority, and(b) whether or not the Parole Authority has held an inquiry.
(2) A revocation order takes effect, or is taken to have effect, on the date on which it is made or on any earlier date that the Parole Authority thinks fit.
(3) If an offender is not taken into custody until after the day on which the revocation order takes effect--(a) the term of the offender's sentence, and(b) the non-parole period of the sentence,are, by this subsection, extended by the number of days the person was at large after the order took effect.