Hi Pingu
in the absence of any response there is a recent new book on the village history of Biddulph maybe its for sale on a website; you could also try contacting Biddulph Library, High Street, Biddulph by telephone or you could also ask where they were based for added interest to the story?
I wonder if they were in the grounds of Biddulph Grange? I also wouldnt rule out Stoke on Trent, Congleton or Leek as they are close to as well.
regards Gareth