This is apparently an animated version (in six episodes)
of one of Terry Pratchett's books from his Discworld
series. In the first episode, which I've seen, a king gets murdered and
becomes a ghost. His baby son is rescued by a servant who bring him to
the three witches, one of which is voiced by Jane Horrocks.
I like the voices, especially Jane's, obviously, but I don't know
anything about the book, so I can't compare it to that.