“(1) Where a court passes a sentence of detention in a young offender institution in the case of an offender who is subject to a detention and training order, the sentence shall take effect as follows— (a) if the offender has been released by virtue of subsection (2), (3), (4) or (5) of section 102 above, at the beginning of the day on which it is passed; (b) if not, either as mentioned in paragraph (a) above or, if the court so orders, at the time when the offender would otherwise be released by virtue of subsection (2), (3), (4) or (5) of section 102... … (4)Subject to subsection (5) below, where at any time an offender is subject concurrently— (a)to a detention and training order, and (b)to a sentence of detention in a young offender institution,he shall be treated for the purposes of sections 102 to 105 above... as if he were subject only to the one of them that was imposed on the later occasion.” (a) if the offender has been released by virtue of subsection (2), (3), (4) or (5) of section 102 above, at the beginning of the day on which it is passed; (b) if not, either as mentioned in paragraph (a) above or, if the court so orders, at the time when the offender would otherwise be released by virtue of subsection (2), (3), (4) or (5) of section 102... (a)to a detention and training order, and (b)to a sentence of detention in a young offender institution,he shall be treated for the purposes of sections 102 to 105 above... as if he were subject only to the one of them that was imposed on the later occasion.”
“Subsection (1)(a) above has effect subject to section 105(3)(a) above.”
“A court sentencing a person to a term of imprisonment may not order or direct that the term is to commence on the expiry of any other sentence of imprisonment from which he has been released.”
“7.22 If a child or young person is found guilty of further imprisonable offence committed during the currency of the order then the court can impose a further officer of detention. This period of detention cannot exceed the period between the date of the new offence and the date on which the original order would have expired. 7.23 This period can be served consecutively or currently with any sentence imposed for the new offence and this period should not be taken into account when determining the appropriate length of the sentence for the new offences.”