Mr Weston's Good Wine, Paperback/T. F. Powys

Among the residents of a small Dorset town called Folly Down, an unlikely struggle between the forces of good and evil is taking place. Because Mr Weston the wine merchant has come to town and the advert atop his Ford van lights up the sky above the village. Whether the villagers choose to buy Mr Weston's light or dark wine is up to them.