There was a film, probably from the 80's or early 90's, definitely not before where a boy from a council estate and a rough life gets transported to another world. There's a white horse, a lady who weaves him magic invisible chainmail or something, I think he has like a magic sword of some kind... Ahhh it's been driving me mad for like a year now! Anyone have any clue wha on earth film I'm on about?

Mio in the Land of Faraway (http://en.wikipedia.org/wiki/Mio_in_the_Land_of_Faraway)