| Wexford North (1885 - 1922) |
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| Wexford South (1885 - 1922) |
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| Wicklow East (1885 - 1922) |
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| Wicklow West (1885 - 1922) |
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| Widnes (1885 - 1983) |
Full name (in Craig 2,3,4) Lancashire, Widnes |
| Wimbledon (1885) |
Full name (in Craig 2) Surrey, Wimbledon |
| Wirral (1885 - 1983) |
Full name (in Craig 2,3,4) Cheshire, Wirral |
| Wisbech (1885 - 1918) |
Full name (in Craig 2) Cambridgeshire, Wisbech |
| Wokingham (1885) |
Full name (in Craig 2,4) Berkshire, Wokingham |
| Wolverhampton East (1885 - 1950) |
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| Wolverhampton South (1885 - 1918) |
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| Wolverhampton West (1885 - 1950) |
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| Woodbridge (1885 - 1950) |
Full name (in Craig 2,3) Suffolk (East), Woodbridge. Also known as Suffolk South East. |
| Woolwich (1885 - 1918) |
Seat of same name existed 1983-1997. |
| Worcestershire Northern (1885 - 1918) |
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