Luckily this is not a syrupy-sweet Disney film. It was filmed entirely in the forbidding Yorkshire moors. And though you know it will be a happy ending, they make no bones about the fact that the small working ponies have spent their entire lives down in the coal mines and are about to be sold to the slaughterhouse. Alistair Sims makes his final movie appearance here - most of you will know him as Scrooge from the 1951 version of "A Christmas Carol" or in a featured role in Alfred Hitchcock's "Stage Fright."