237.Section 23 introduces Schedule 6. This Schedule provides for a credit toward a subsequent custodial sentence for periods of remand on bail subject to an electronically monitored curfew. The provisions are the same in substance as those set out in section 21 but apply to offenders committed to a custodial sentence whose offences were committed before 4 April 2005 and, therefore, are subject to the provisions relating to treatment of periods spent remanded under section 67 of the Criminal Justice Act 1967. The provisions therefore have the same effect on prisoners as those set out in section 21.