ベルパー (議会選挙区)
When created in 1918, the constituency included the Urban Districts of Alfreton, Belper and Heage, together with the Rural District of Belper and part of the Rural District of Repton (the civil parishes of Ash, Bearwardcote, Bretby, Burnaston, Dalbury Lees, Egginton, Etwall, Findern, Foremark, Ingleby, Mickleover, Newton Solney, Radbourne, Repton, Trusley, Twyford and Stenson, and Willington).
In 1950, boundary changes removed the Urban Districts of Alfreton and Heage to the Ilkeston constituency, together with the civil parish of Shipley from out of Belper Rural District.