The seat comprised the mostly industrial Deeside communities of Mostyn, Flint, Mold, Northop and Holywell.[5] Its residents were slightly less affluent than the UK average.[6]
Boundaries
Map of boundaries 2010-2024
1983–1997: The Borough of Delyn, and the Borough of Rhuddlan wards of Meliden, Prestatyn Central, Prestatyn East, Prestatyn North, and Prestatyn South West.
The Delyn constituency was created in 1983 from the seats of Flintshire West and Flintshire East. It is normally inclined to elect Labour MPs, although the Conservatives won the seat in their 1983 and 1987 landslide elections, and regained it in 2019 when they won their biggest national majority since the 1980s. From 1983 to 1997, the constituency included Tory-leaning Prestatyn, which was then transferred to the Vale of Clwyd seat.