| Plymouth (1832 - 1918) |
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| Portsmouth (1832 - 1918) |
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| 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 |
| Radnorshire (1832 - 1918) |
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| Ramsey (1885 - 1918) |
Full name (in Craig 2) Huntingdonshire, Ramsey |
| Rhondda (1885 - 1918) |
Full name (in Craig 2) Glamorganshire, Rhondda. Constituency of same name reformed in 1974¹. |
| Rochester (1832 - 1918) |
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| Ross (1885 - 1918) |
Full name (in Craig 2) Herefordshire, Ross. Also known as Herefordshire Southern |
| Roxburghshire (1832 - 1918) |
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| Rutlandshire (1832 - 1918) |
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| Scarborough (1832 - 1918) |
Constituency of same name also existed 1974¹-1997. |
| Shoreditch Haggerston (1885 - 1918) |
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| Shoreditch Hoxton (1885 - 1918) |
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| Sleaford (1885 - 1918) |
Full name (in Craig 2) Lincolnshire, Sleaford |
| Somerset Eastern (1832 - 1918) |
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| Somerset Northern (1885 - 1918) |
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| Somerset Southern (1885 - 1918) |
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| Southwark Bermondsey (1885 - 1918) |
Constituency of same name also existed 1974¹-1983. |
| Southwark Rotherhithe (1885 - 1918) |
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| Southwark West (1885 - 1918) |
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| Spalding (1885 - 1918) |
Full name (in Craig 2) Lincolnshire, Spalding |