11(1)Where—
(a)before the date on which section 1A of the M1 Criminal Justice Act 1982 comes into force an offender has been committed for sentence to the Crown Court under section 37 of the M2 Magistrates’Courts Act 1980; but
(b)the Crown Court has not dealt with him before that date,
it shall have the same powers of sentencing as if he had been committed on or after that date.
(2)A court to which it falls to determine for the purposes of any enactment how a previous court could or might have dealt with an offender shall if the offender is under 21 years of age make that determination as if Part I of the Criminal Justice Act 1982 had been in force as amended by this Act.