58U.K.The following subsection shall be added as subsection (3) of section 135 of that Act (detention of offender for one day in court house or police station) and as subsection (4) of section 136 of that Act (committal to custody overnight at police station for non-payment of sum adjudged by conviction)—
“(0)This section shall have effect in relation to a person aged 17 or over but less than 21 as if references in it to prison were references to detention under section 9 of the Criminal Justice Act 1982 (detention of persons aged 17 to 20 for default).”.