My God JJ, yes - "Culloden" is an absolute must, I'll never forget watching it on TV in the sixties. Certainly put a size sixteen boot into Bonnie Prince bluidy Charlie's noo awa and all that.   

But it looks like the BFI have deleted the DVD - it's obtainable from Amazon new, but at FORTY FIVE QUID. It is available elsewhere at £4 (presumably pirated and maybe off VHS - they claim it's in the public domain - it isn't).