In the novel The A.B.C. Murders, Llandudno is the name of the bungalow in Bexhill where the Barnard family lives. It is described as a "minute bungalow" and had been among a group of about fifty houses in the town built by a speculative builder not long before.
According to Mr Barnard, the family had only moved in about two years before the events in the book. Before that, he had been in the ironmongery business in Kennington, London. Subsequently he had retired and moved to Bexhill because he had always wanted to live by the sea.