Well, they do use SF-ish (for lack of a better word) to tell their stories, but "stars and magic" probably describes it better.

And it actually works best for me when they drop the technobabble and focus on humour or characterization or symbolism disguised as pseudo-sci-fi instead.

The time-windows on the spaceship in The Girl of the Fireplace, for example, might seem more like real SF, but I still thought they were only a vehicle for a fairy-tale about the doomed romance of a couple with two different ways of perceiving/living time. (I'm such a sap.)