Morning Extra - 01/07/2008

Should anyone carrying a knife be automatically sent to prison? We hear from John Muir, whose son Damien was murdered in a knife attack in Greenock last year. John is campaigning for mandatory jail terms for anyone caught carrying a knife, arguing that it would allow ordinary people to "reclaim the streets from the knife-wielding thug". But, on the day an independent review calls for fewer criminals to be locked up, how would our overcrowded prisons cope? Graham Stewart takes your calls, texts and emails.