Wales

Wales (Welsh: Cymru) is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, and the Bristol Channel to the south.

Wales in the works by Agatha Christie

 * Marchbolt, the hometown of Bobby Jones, is located on the Welsh seaside. (Why Didn't They Ask Evans?)
 * Mrs Barnard is of Welsh origin. (The A.B.C. Murders)
 * Albert Batt's mother-in-law lives in Wales. (N or M?)
 * The home of Richard Warwick is located in the south of Wales, near the Bristol Channel. (The Unexpected Guest)