The head of the government's merged prison and probation service is to step down, after serving a year in the role.

Martin Narey is leaving the National Offender Management Service (NOMS) to become chief executive of Barnardo's children's charity, at the end of 2005.
In November, he had insisted he would stay at NOMS, amid press speculation there were problems at the service.
But Mr Narey told the BBC News website his surprise move was not driven by any "disenchantment with NOMS".