I think I'm one of maybe two Americans who have seen this (the other being Steve Puchalski of "Shock Cinema" magazine on whose recommendation I recently bought this DVD, sight unseen, from Amazon UK). This short-lived but fondly remembered British TV series is a very offbeat, supernatural mystery set in the Welsh countryside revolving around a set of dinner plates (that's right--dinner plates) that a step-brother and sister and their housekeeper's son find in the attic of a country cottage. It's a low-budget and (especially by today's standards) low-key affair, but it is nevertheless effective and interesting, at times even unsettling.
You could compare it to the offbeat, unsettling American TV series "Twin Peaks",I guess, but it really has indelible elements of 60's era BBC programming and high-quality children's literature (it was based on a children's book). I personally enjoy all of these things, and being one quarter Welsh, I find Welsh mythology very interesting (although I have to say the Welsh countryside is actually one of the most boring places I've ever visited).
Due to it's roots in children's literature and television, this is obviously not chock-full of sex or violence. But what the mild violence it contains is eerily unsettling, and there is kind of a teen love triangle that is rather perverse in that two of it's members are step-brother and step-sister. Moreover, the step-sister is played by Gillian Hills, a gorgeous 60's-era, Swinging London dolly-bird who is most famous for a pair of three-way sex scenes in two classic movies of that era (with David Hemmings and Jane Birkin in "Blow Up" and with Malcolm McDowell and some other actress in "A Clockwork Orange"). She almost can't help, but bring SOME sex appeal to the proceedings. Still, by modern-day standards this is very tame and rather slow. But I liked it simply because it was offbeat and interesting, and not really like ANYTHING I'd ever seen before.