I looked on their website in the hope that perhaps they were offering it to be viewed online, but that wasn't the case . They do have a bit of info about the programme though here...

Kimmy, it wasn't a film but a documentary... so it will never be available for rent, unfortunately . So the only chance I have of viewing it is if they repeat it - I don't know how likely that will be though. I can't imagine a huge number of people watching that programme.