| Shropshire Northern |
|
| Shropshire Southern |
|
| Sittingbourne and Sheppey |
|
| Skipton |
Full name (in Craig 2,3,4) Yorkshire (West Riding), Skipton |
| Skipton and Ripon |
|
| Sleaford |
Full name (in Craig 2) Lincolnshire, Sleaford |
| Sleaford and North Hykeham |
|
| Sligo [borough] |
Disfranchised for corruption in 1870 |
| Sligo [county] |
|
| Sligo North |
|
| Sligo South |
|
| Slough |
|
| Smethwick |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Smethwick |
|
| Solihull |
Full name (in Craig 3,4) Warwickshire, Solihull |
| Solihull West and Shirley |
|
| Somerset Eastern |
|
| Somerset Mid |
|
| Somerset North |
|
| Somerset North |
|
| Somerset North East |
The constituency covers the part of Bath and North East Somerset that is not in the Bath constituency and as such contains 21 electoral wards in the Bath and North East Somerset District |
| Somerset Northern |
|
| Somerset Southern |
|
| Somerset Western |
|
| Somerton and Frome |
|