Amber Valley / イギリス
ベルパー（Belper）はかつて存在したイギリスの議会の選挙区。この選挙区は1918年の総選挙でダービーシャーのカウンティ区分として作成され、ダービーのカウンティと取り囲む位置の中央として構成された。名前はこの地区の北にある市場町のベルパーから取られた。1950年にカウンティの南部を含むように拡張された。実在する選挙区の中で最も激しい激戦議席となっている。 The area had an ever-expanding population after 1945 as prosperous suburbs of Derby were built outside the city boundaries. Lord George-Brown, who represented the seat at the time, wrote in 1971 after his defeat in the 1970 general election that "The electorate had increased by over 10,000 since 1966, mainly from the growth of middle-class housing estates, so that most of the new electors could be expected to vote Tory. Since my majority in 1966 was 4,274, an influx of 10,000 new voters, mainly Tory, obviously imperilled the seat." In fact, a Boundary Commission report issued in 1969 had recommended changes which would have removed the extra voters, but the Labour government of the time had delayed implementation of the report.