The most recent publication for adult reoffending is “Adult Re-offending: Results from the 2002 cohort”, Home Office Statistical Bulletin 25/05, available online at:
http://www.homeoffice.gov.uk/rds/pdfs05/hosb2505.pdf
Similarly for juveniles the most recent publication is “Juvenile Re-offending: Results from the 2004 Cohort”, Home Office On-Line Report 10/06, available online at:
http://www.homeoffice.gov.uk/rds/pdfs06/hosb1006.pdf
Both of these publications hold breakdowns by those who served custodial or community sentences, age and offence. The section "Measuring Re-offending", which begins on page one of both reports, explains the difference between reconviction and re-offending measures, as well the changes to the data source used for these computations. Because of the change in methodology, figures for previous years are not comparable.