h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Does anyone remember the TV programme/series that was made/shown in 1983/4 to celebrate George Orwell? It may not have been more than one or two programmes, and I believe each one focused on one of his books. I remember distinctly there was one about Animal Farm, which is the one that interests me in particular. I think it was probably a BBC production. Would really like to track this down, especially the video, but I can't remember what it was called, and searching the internet for 'George Orwell' and '1984' inevitably brings up a lot of results!