| Aberdare (1950 - 1983) |
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| Aberdeenshire East (1950 - 1983) |
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| Aberdeenshire West (1950 - 1983) |
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| Arundel and Shoreham (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 4) Sussex (West), Arundel and Shoreham |
| Ayr (1950 - 2005) |
Full name (in Craig 4) Ayrshire and Bute, Ayr |
| Barry (1950 - 1983) |
Full name (in Craig 4) Glamorganshire, Barry |
| Bebington (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Beckenham (1950 - 2024) |
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| Bedfordshire South (1950 - 1983) |
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| Bermondsey (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Berwickshire and East Lothian (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Slight change of name rather than true revision in 1974 - see Berwick and East Lothian. |
| Bethnal Green (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Beverley (1950 - 1955) |
Constituency of same name also existed 1832-1870 and 1983-1997. |
| Billericay (1950 - 2010) |
Full name (in Craig 4) Essex, Billericay |
| Bilston (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Birkenhead (1950) |
Constituency of same name also existed 1861-1918. |
| Birmingham, All Saints (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Birmingham, Hall Green (1950 - 2024) |
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| Birmingham, Northfield (1950) |
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| Birmingham, Perry Barr (1950) |
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| Birmingham, Selly Oak (1950) |
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| Birmingham, Small Heath (1950 - 1997) |
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| Birmingham, Stechford (1950 - 1983) |
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| Blackburn East (1950 - 1955) |
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| Blackburn West (1950 - 1955) |
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