"Where a prisoner is to be charged with an offence against discipline, the charge shall be laid as soon as possible and, save in exceptional circumstances, within 48 hours of the discovery of the offence. "
"Where a prisoner is to be charged with an offence against discipline, the charge shall be laid as soon as possible"
"a magistrates' court shall not try an information... unless the information was laid... within six months from the time when the offence was committed. "
'what consequence did Parliament intend should ensue from non-compliance with the rule ?'