Sex offenders 'face lie detector' in England and Wales

Mandatory polygraph testing for sex offenders is set to be rolled out across England and Wales following a successful pilot scheme, ministers have said.

It found offenders who were tested were more honest and gave better information, which meant they were managed more effectively.

The pilot took place in the East and West Midlands probation areas from April 2009 to October 2011.

Matt Prodger reports.