Between 29 June 2007 and 31 August 2009, around 67,400 prisoners were released under End of Custody Licence, the latest date for which this figure is available. Of these, around 11,200, about 17 per cent. had previously been refused release on home detention curfew.
These figures have been drawn from administrative IT systems, which, as with any large scale recording system, are subject to possible errors with data entry and processing.
There is a significant difference between the operation of the HDC scheme and release on ECL. Release on HDC can lead to the release on licence for up to four and a half months before the automatic release date. The average period spent on HDC is about two and a half months. In contrast, the maximum period spent on ECL is two and a half weeks, 18 days.
The qualifying criteria and selection processes for the schemes reflect these differences.
Since 2007, the National Offender Management Service has held information centrally on the number of offenders convicted of terrorist or terrorism-related offences who have been released into post-custody supervision. To provide the information requested, going back to 2001, would require manual checking of records, which could be undertaken only at disproportionate cost.
Since 2007, 36 offenders convicted of terrorist or terrorism-related offences have been released to licensed supervision in the community. None of these offenders has been arrested or convicted of a terrorist or terrorism-related offence following release.