Does anyone know where i can get 'junk' (the film made from the book by melvin burgess) on dvd?

When I was at school we read Junk by Melvin Burgess in English and we watched the film after, it was originally made for tv but was later sold as a DVD. I've been looking for the dvd everywhere but all I can find is a japanese film also called junk. If anyone knows where I could get it from i would be really grateful :) Thanks in advance