I've probably mentioned this at least once before, but it's a useful pendant to the entry on Folk Horror TV from earlier this month.
The Thames TV series Shadows ran from 1975-8 over three seasons. Each season had a different title sequence. You can see them here. There's a distinct whiff of folk horror about them, I feel. The stories vary in quality and of course it was low budget stuff. But the writing was often first rate. Among the authors contributing to the series were Joan Aiken, Fay Weldon, Penelope Lively, and Brian Patten. There's also an adaptation of 'The Other Window' by J.B. Priestley.
As this was a children's series the horror was fairly mild. But Shadows stands up well as an anthology series.