| Sheffield Central (1885) |
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| Sheffield, Ecclesall (1885 - 1950) |
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| Sheffield, Hallam (1885) |
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| Shipley (1885) |
Full name (in Craig 2,3,4) Yorkshire (West Riding), Shipley |
| Shoreditch Haggerston (1885 - 1918) |
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| Shoreditch Hoxton (1885 - 1918) |
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| Skipton (1885 - 1983) |
Full name (in Craig 2,3,4) Yorkshire (West Riding), Skipton |
| Sleaford (1885 - 1918) |
Full name (in Craig 2) Lincolnshire, Sleaford |
| Sligo North (1885 - 1922) |
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| Sligo South (1885 - 1922) |
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| Somerset Northern (1885 - 1918) |
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| Somerset Southern (1885 - 1918) |
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| South Molton (1885 - 1950) |
Full name (in Craig 2,3) Devon, South Molton |
| Southport (1885) |
Full name (in Craig 2) Lancashire, Southport |
| Southwark Bermondsey (1885 - 1918) |
Constituency of same name also existed 1974ยน-1983. |
| Southwark Rotherhithe (1885 - 1918) |
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| Southwark West (1885 - 1918) |
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| Sowerby (1885 - 1983) |
Full name (in Craig 2,3,4) Yorkshire (West Riding), Sowerby |
| Spalding (1885 - 1918) |
Full name (in Craig 2) Lincolnshire, Spalding |
| Spen Valley (1885 - 1950) |
Full name (in Craig 2,3) Yorkshire (West Riding), Spen Valley |
| Staffordshire North Western (1885 - 1918) |
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| St Albans (1885) |
Full name (in Craig 2,3,4) Hertfordshire, St Albans. Constituency of same name also existed 1832-1852. |
| St Augustine's (1885 - 1918) |
Full name (in Craig 2) Kent, St Augustine's |
| St Austell (1885 - 1918) |
Full name (in Craig 2) Cornwall, St Austell |
| St George's Hanover Square (1885 - 1918) |
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