Reconviction information for offenders convicted of murder, released on life licence, and subsequently reconvicted for a grave offence was published in 1997 as: Life Licensees—Reconvictions and recalls by the end of 1995: England and Wales, Home Office Statistical Bulletin 297. The report is available online at http://www.homeoffice.gov.uk/rds/pdfs/hosb297.pdf
Grave offences are mainly offences of homicide, serious wounding, rape, buggery, robbery, aggravated burglary and arson endangering life.
Table 3 (page 10) of the report shows that 1.1 per cent. of people who served a mandatory life sentence for murder and were released on life licence between 1972 and 1993 were reconvicted of a grave offence within two years of release (12 of 1,121 released and successfully matched to the Offenders Index for their criminal history. A total of 1,212 were released during this period; 91 could not be matched to the Offenders Index).
A five-year reconviction rate is available for those released between 1972 and 1990, and shows that 2.7 per cent. of people who served a mandatory life sentence for murder and were released on life licence were reconvicted of a grave offence within five years of release (26 of 936 released and successfully matched to the Offenders Index for their criminal history. A total of 1,019 were released during this period; 83 could not be matched to the Offenders Index).
The information is not available in the form requested. Data on the number of individuals convicted of murder while being supervised by the Probation Service cannot be broken down to show how many of those individuals were serving community sentences and how many were on licence following release from custody.