Alas, rather like Blakes 7 the mingeing sods won't let us at the archives! I don't think you can get TCfSW on DVD. Though I've no idea how well the series has weathered since the eighties.
It was rather stand alone of it's obscure kind, though of course stuff like The Comic Strip Presents was probably around the same time... (not that I was in theory old enough to stop up till 9pm in order to watch that kind of grown-up comedy!)