Caroline Watt Designs, of Hall Farm, Fen Ditton, Cambridge, was at the 1979 British Toy & Hobby Fair. The Directory says: "Range of market stalls with mouth watering food and peg doll stallholders. Stoneware headed dolls beautifully dressed."
Does anybody have any of her stalls? None are pictured in the BTHF Directory, but I found images on the web, & then recognised these stalls in Hamleys catalogues.