| Wakefield and Rothwell | Simon Lightwood | Labour (Co-op) | 23 June 2022 |
| Wallasey | Dame Angela Eagle | Labour | 9 April 1992 |
| Walsall and Bloxwich | Valerie Vaz | Labour | 6 May 2010 |
| Walthamstow | Ms Stella Creasy | Labour (Co-op) | 6 May 2010 |
| Warrington North | Charlotte Nichols | Labour | 12 December 2019 |
| Warrington South | Sarah Hall | Labour (Co-op) | 4 July 2024 |
| Warwick and Leamington | Matt Western | Labour | 8 June 2017 |
| Washington and Gateshead South | Mrs Sharon Hodgson | Labour | 5 May 2005 |
| Watford | Matt Turmaine | Labour | 4 July 2024 |
| Waveney Valley | Adrian Ramsay | Green Party | 4 July 2024 |
| Weald of Kent | Katie Lam | Conservative | 4 July 2024 |
| Wellingborough and Rushden | Gen Kitchen | Labour | 15 February 2024 |
| Wells and Mendip Hills | Tessa Munt | Liberal Democrat | 4 July 2024 |
| Welwyn Hatfield | Andrew Lewin | Labour | 4 July 2024 |
| West Aberdeenshire and Kincardine | Andrew Bowie | Conservative | 8 June 2017 |
| West Bromwich | Sarah Coombes | Labour | 4 July 2024 |
| West Dorset | Edward Morello | Liberal Democrat | 4 July 2024 |
| West Dunbartonshire | Douglas McAllister | Labour | 4 July 2024 |
| West Ham and Beckton | James Asser | Labour | 4 July 2024 |
| West Lancashire | Ashley Dalton | Labour | 9 February 2023 |
| West Suffolk | Nick Timothy | Conservative | 4 July 2024 |
| West Tyrone | Órfhlaith Begley | Sinn Féin | 3 May 2018 |
| West Worcestershire | Dame Harriett Baldwin | Conservative | 6 May 2010 |
| Westmorland and Lonsdale | Tim Farron | Liberal Democrat | 5 May 2005 |
| Weston-super-Mare | Dan Aldridge | Labour | 4 July 2024 |
| Wetherby and Easingwold | Sir Alec Shelbrooke | Conservative | 6 May 2010 |
| Whitehaven and Workington | Josh MacAlister | Labour | 4 July 2024 |
| Widnes and Halewood | Derek Twigg | Labour | 1 May 1997 |
| Wigan | Lisa Nandy | Labour | 6 May 2010 |
| Wimbledon | Mr Paul Kohler | Liberal Democrat | 4 July 2024 |
| Winchester | Dr Danny Chambers | Liberal Democrat | 4 July 2024 |
| Windsor | Jack Rankin | Conservative | 4 July 2024 |
| Wirral West | Matthew Patrick | Labour | 4 July 2024 |
| Witham | Priti Patel | Conservative | 6 May 2010 |
| Witney | Charlie Maynard | Liberal Democrat | 4 July 2024 |
| Woking | Mr Will Forster | Liberal Democrat | 4 July 2024 |
| Wokingham | Clive Jones | Liberal Democrat | 4 July 2024 |
| Wolverhampton North East | Sureena Brackenridge | Labour | 4 July 2024 |
| Wolverhampton South East | Pat McFadden | Labour | 5 May 2005 |
| Wolverhampton West | Warinder Juss | Labour | 4 July 2024 |
| Worcester | Tom Collins | Labour | 4 July 2024 |
| Worsley and Eccles | Michael Wheeler | Labour | 4 July 2024 |
| Worthing West | Dr Beccy Cooper | Labour | 4 July 2024 |
| Wrexham | Andrew Ranger | Labour | 4 July 2024 |
| Wycombe | Emma Reynolds | Labour | 4 July 2024 |
| Wyre Forest | Mark Garnier | Conservative | 6 May 2010 |
| Wythenshawe and Sale East | Mike Kane | Labour | 13 February 2014 |