It's only saving grace is the minimal pricetag of just # 5, and in fairness if you go into it with no expectations of it being faithful to the original then you'll have a couple of hours
of mild entertainment.
To use that as anything other than
mild entertainment is ludicrous.
Overall a decent movie, I would suggest renting it for
some mild entertainment!
Nevertheless, it is a children's film and should source
some mild entertainment from them, albeit it is hardly a memorable film that will be remembered as a piece of one's childhood in future years.