Statistics on prison discipline are published annually by the Ministry of Justice in chapter 8 of the Offender Management Caseload Statistics, available publicly at:
It is not possible to provide figures on discipline hearings for prisoners subject to indeterminate sentences for public protection because the National Offender Management Service does not collect centrally information on adjudications by sentence type.
The Ministry of Justice produces annual projections of the prison population, most recently in September 2008.
Indeterminate sentences for public protection (IPP) are included in the modelling of the prison population. At the time the projections were made, the rate at which IPP were being issued was around 140(1) per month. However, changes made in the Criminal Justice and Immigration Act 2008 are expected to reduce that to around 45 per month. On
More details on the projections may be found in the latest published bulletin, "Prison Population Projections 2008-2015" Ministry of Justice Statistics Bulletin,
(1) Figures rounded to nearest 10.