The governor's office inside Brixton prison feels as hot and airless as the cells surrounding it and John Podmore looks tired as he gulps down a large mug of coffee to revive himself.

His pitch is that ex-offenders - with the right training - make loyal employees.
"We are wasting vast amounts of human resources," he says. Brixton is home to 800 inmates, twice as many as it was built for 200 years ago, and the criminal justice system is at breaking point unless the cycle of re-offending can be broken.