(1)This section applies where a court passes a custodial sentence other than one fixed by law or falling to be imposed under section 225 or 226.
(2)Subject to section 51A(2) of the Firearms Act 1968 (c. 27), sections 110(2) and 111(2) of the Sentencing Act and sections 227(2) and 228(2) of this Act, the custodial sentence must be for the shortest term (not exceeding the permitted maximum) that in the opinion of the court is commensurate with the seriousness of the offence, or the combination of the offence and one or more offences associated with it.