(1A) A sentence of imprisonment to
which this section applies must be imposed after any other sentence of
imprisonment that is imposed in the same proceedings.
(2) A sentence of
imprisonment to which this section applies imposed on an offender--
(a) who,
when being sentenced, is subject to another sentence of imprisonment that is
yet to expire, or
(b) in respect of whom another sentence of imprisonment has
been imposed in the same proceedings,
is to be served consecutively with the
other sentence of imprisonment or, if there is a further sentence of
imprisonment yet to commence, with that further sentence.
(3) In this
section, a reference to a sentence of imprisonment is taken to be a reference
to--