I have DVDs of both The Moonstone and Sense and Sensibility with Robin Ellis. I got them from Amazon some years ago. I'm sure that they still have copies - they are both rather old TV adaptations and cost very little.
Yes, Ross, I have actually seen it - a friend of mine has it. It is quite faithful to the book, although it does look, unsurprisingly, rather dated.
She also has Sense and Sensibility with Robin as Edward Ferrars. I think it is a Dutch DVD, as my friend is from the Netherlands. Her Dutch version of Poldark, a small amount of which I have seen, is about 3 hours longer than the UK version (according to her). It is only the subtitles which are Dutch!
For anyone who is not familiar with it, The Moonstone is a really good read. Wilkie Collins captures perfectly the different styles of each narrator.