The number of offenders sentenced to an indeterminate sentence of imprisonment for public protection (IPP) with a tariff of 23 months or less sentenced in each of the years requested is shown in the following table:
Number 2005 196 2006 529 2007 547 2008 365
These figures exclude those sentenced to an indeterminate sentence for public protection who subsequently had their sentence quashed.
By virtue of provisions in the Criminal Justice and Immigration Act 2008, which took effect from 14 July 2008, an IPP may not be passed where the minimum tariff is less than two years, except where offenders have committed extremely serious crimes in the past.
The figures in the table above are taken from the Public Protection Unit Database in the National Offender Management Service, and, as with any large scale recording system, it is subject to possible errors arising from either data entry or processing.