| Prestwich (1885 - 1918) |
Full name (in Craig 2) Lancashire, Prestwich |
| Pudsey (1885 - 1918) |
Full name (in Craig 2) Yorkshire (West Riding), Pudsey. Constituency of same name reformed in 1950. |
| Queen's County Leix (1885 - 1918) |
This county became County Laois in 1922. |
| Queen's County Ossory (1885 - 1918) |
This county became County Laois in 1922. |
| Radcliffe-cum-Farnworth (1885 - 1918) |
Full name (in Craig 2) Lancashire, Radcliffe-cum-Farnworth |
| Ramsey (1885 - 1918) |
Full name (in Craig 2) Huntingdonshire, Ramsey |
| Reigate (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 2,3,4) Surrey, Reigate. Constituency of same name also existed 1832-1868, and another of the same name reformed 1983. |
| Renfrewshire Eastern (1885 - 1950) |
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| Renfrewshire Western (1885 - 1950) |
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| Rhondda (1885 - 1918) |
Full name (in Craig 2) Glamorganshire, Rhondda. Constituency of same name reformed in 1974ยน. |
| Romford (1885) |
Full name (in Craig 2,3) Essex, Romford. Craig (3) 216 from 1945 revision. |
| Roscommon North (1885 - 1922) |
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| Roscommon South (1885 - 1922) |
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| Ross (1885 - 1918) |
Full name (in Craig 2) Herefordshire, Ross. Also known as Herefordshire Southern |
| Rossendale (1885 - 1983) |
Full name (in Craig 2) Lancashire, Rossendale |
| Rotherham (1885) |
Full name (in Craig 2) Yorkshire (West Riding), Rotherham |
| Rugby (1885 - 1983) |
Full name (in Craig 2,3,4) Warwickshire, Rugby |
| Rushcliffe (1885) |
Full name (in Craig 2,3,4) Nottinghamshire, Rushcliffe |
| Saffron Walden (1885 - 2024) |
Full name (in Craig 2,3,4) Essex, Saffron Walden |
| Salford North (1885 - 1950) |
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| Salford South (1885 - 1950) |
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| Salford West (1885 - 1983) |
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| Sevenoaks (1885) |
Full name (in Craig 2,3,4) Kent, Sevenoaks |
| Sheffield, Attercliffe (1885 - 2010) |
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| Sheffield, Brightside (1885 - 2010) |
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