(1) This Division applies to a sentence for an offence that is dealt with on
indictment, other than--
(a) an offence under a law of the Commonwealth,
unless the regulations otherwise provide in the case of a particular offence
or class of offences, or
(b) an offence committed by a person who was under
the age of 18 years when the offence was committed and under the age of 21
years when charged before the court with the offence.
(2) A court must not
apply any other discount for the utilitarian value of a guilty plea to an
offence to which this Division applies other than the discount provided for by
this Division.