Harry Fletcher, from the National Association of Probation Officers, said the idea of mentors was "excellent" but he thought it would never happen because of the sheer numbers needed to make it work. He told the BBC:
You'd need an army of volunteers or employees of private companies to do it properly.
More top news
Fine for most on Monday but turning increasingly windy
Five people have been rescued from a small leisure boat on the Solent, after its engine failed and it began taking in water.
A US doctor has been accused of killing a lion during an illegal hunt, a week after it emerged dentist Walter Palmer killed Cecil the lion.