Prince Charles has laughed and joked with TV duo Ant and Dec during a visit to a Marks and Spencer store where he met young people involved with the Prince's Trust. The heir to the throne looked relaxed, despite the fact private 'black spider' letters he wrote are due to to be released later today. Report by Hampshirel. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn