The BBC's Hard Christmas campaign continues with an update on the story of Vernon Burgess, Birmingham's most famous Big Issue seller. After spending last Christmas in a psychiatric unit, Vernon is hping to busk his way to a better Christmas, but he needs a busker's licence, a guitar and a catchy song if he's to succeed. It's going to be another hard Christmas for Vernon - but with a little help from his friends, it might be one to remember.