Restorative Justice Council
is the national voice for Restorative Justice. They provide information about Restorative Justice to the public; support and resource their members who deliver Restorative Justice and promote the development and use of Restorative Justice.
Prison Fellowship International 'Restorative Justice Online'
is a service of the Prison Fellowship International Centre for Justice and Reconciliation. Its purpose is to be an authoritative, credible, non-partisan resource of information on restorative justice.
Youth Justice Board have a good resources page for Restorative Justice practitioners and link to key research reports and studies.
Restorative Justice: The Evidence [Esmee Fairburn, 2007] is an independent review of restorative justice evaluations in the UK and internationally.