| WAM Construction (Midlands) Limited | Construction | 2022 |
| Wang TSE Ltd | Hospitality | 2018 |
| Ward Diamond Advertising Limited | Professional & scientific | 1995 |
| Ward Hutton LLP | | 2026 |
| Ward Joinery (Notts) Ltd | Construction | 2020 |
| Ward Kitson Ltd | Households | 2026 |
| Ward- Smith Holdings Ltd | Health & social care | 2026 |
| Wards ATV Limited | Wholesale & retail | 2025 |
| Wards Capital Limited | Financial services | 2021 |
| Wards Developments Limited | Real estate | 2019 |
| Wardz TV Services Ltd | Information & communication | 2022 |
| Warehome Coffee Co Ltd | Extraterritorial | 2019 |
| Warehome Holdings Ltd | Financial services | 2025 |
| Warehome Limited | Professional & scientific | 2012 |
| Warm Roof Conservatory Specialists Limited | Construction | 2019 |
| Warsop Self Storage Limited | Administrative & support | 2021 |
| Washy Luxe Limited | Administrative & support | 2026 |
| Waste Water Systems Ltd | Extraterritorial | 2006 |
| Water Well Solutions Limited | Water & waste | 2015 |
| Watermelon Moonshine Limited | Financial services | 2024 |
| Waterside Mortgage Solutions Limited | Financial services | 2014 |
| Watson & Jenkins Opticians Ltd | Wholesale & retail | 2003 |
| Watson & Topham Flooring - Interiors Limited | Wholesale & retail | 2025 |
| Watson Energy Storage Ltd | Professional & scientific | 2026 |
| Wave Couriers Ltd | Transport & logistics | 2020 |
| Wayanad Virgin Agro Foods U.K. Ltd | Wholesale & retail | 2025 |
| Wayco Limited | Wholesale & retail | 2020 |
| Wayne Cutts Consulting Ltd | Wholesale & retail | 2023 |
| WB GAS Solutions Ltd | Professional & scientific | 2022 |
| Wcec Group Limited | Professional & scientific | 2014 |
| WCR UK Limited | Manufacturing | 1999 |
| Wdad Limited | Professional & scientific | 2012 |
| WDK Mancave Ltd | Other services | 2024 |
| WE ARE Fulfilment Ltd | Transport & logistics | 2021 |
| WE ARE Spaces Limited | Construction | 2017 |
| WE Print Anything Limited | Extraterritorial | 2012 |
| WE the Free C.I.C. | Information & communication | 2021 |
| Wearbox Ltd | Wholesale & retail | 2025 |
| Web and Go Ltd | Information & communication | 2017 |
| Webbnet Limited | Professional & scientific | 1994 |
| Webdex Ltd | Information & communication | 2019 |
| Webrankers Limited | Information & communication | 2012 |
| Webshroom Ltd | Professional & scientific | 2024 |
| Websters Scrap Metals Limited | Water & waste | 2009 |
| Webwizards Limited | Extraterritorial | 2000 |
| Wedomorethanprint Ltd | Manufacturing | 2013 |
| WEF Care Limited | Health & social care | 2017 |
| Weightron Bilanciai Limited | Manufacturing | 1987 |
| Weightron Bilanciai Properties Limited | Real estate | 2015 |
| Welbeck Gardens Management Company Limited | Real estate | 2004 |
| Welcome Home Travel Ltd. | Administrative & support | 2016 |
| Well Supermarket Ltd | Wholesale & retail | 2020 |
| Wellbeing Edit Clinic Ltd | Other services | 2026 |
| Wellbeing Practitioner Hub Ltd | Education | 2025 |
| Wellness Village Buildings and Fencing Ltd | Administrative & support | 2025 |
| Wellquip Limited | Professional & scientific | 2025 |
| Wells Quarry Vermont Slate Limited | Wholesale & retail | 2024 |
| Wellspring House Ltd | Real estate | 2018 |
| Wemakefootballshirts Ltd | Wholesale & retail | 2019 |
| Wera Tools (UK) Limited | Wholesale & retail | 1990 |
| West Bank Building & Property Services Ltd | Construction | 2003 |
| West Bars Mini Market Limited | Wholesale & retail | 2020 |
| West Broughton Enterprises Limited | Real estate | 2017 |
| West Street Property (Chesterfield) Limited | Real estate | 2026 |
| Westbrook Medical Limited | Health & social care | 2023 |
| Westbury Haulage Ltd | Wholesale & retail | 2023 |
| Westbury Hire Ltd | Administrative & support | 2025 |
| Westcliffe Construction Limited | Extraterritorial | 2013 |
| Westcliffe Properties Limited | Construction | 1996 |
| Westco Bilanciai Limited | Wholesale & retail | 1974 |
| Westfield Clean Ltd | Administrative & support | 2015 |
| Westfield Geomatics Ltd | Professional & scientific | 2018 |
| Westleigh Court Newbold Limited | Hospitality | 1989 |
| Westminster Electrical Contractors Limited | Construction | 2010 |
| Westmoor Property Holdings Ltd | Financial services | 2026 |
| Westport Glass Ltd | Construction | 2020 |
| Westridge Construction (Chesterfield) Ltd | Construction | 2010 |
| Westwood Home Services Limited | Other services | 2015 |
| Westwood Shaw Limited | Real estate | 2025 |
| Weyland-Yutani Investments Ltd | Professional & scientific | 2018 |
| WGY Academy Limited | Education | 2023 |
| WH Commercials (Chesterfield) Ltd | Wholesale & retail | 2024 |
| Wharf Lane Estates Ltd | Real estate | 2020 |
| Wharf View (Kilnhurst) Management Company Limited | Households | 2011 |
| What the Booth UK Limited | Professional & scientific | 2025 |
| What WAS IT? Ltd | Information & communication | 2022 |
| Whatever Whatever (Derbyshire) Limited | Wholesale & retail | 2026 |
| Wheatcroft Sims Associates Limited | Administrative & support | 1997 |
| Wheelhouse Consulting Limited | Information & communication | 2025 |
| Wheely FUN Wheels Limited | Education | 2017 |
| Whiskers Wild Limited | Other services | 2019 |
| Whiston Hall Limited | Health & social care | 1980 |
| Whitaker Property Company Ltd | Real estate | 2021 |
| White Eagles Transport Limited | Transport & logistics | 2016 |
| White Lodge Holdings Filey Ltd | Financial services | 2020 |
| White Lodge Hotel Filey Ltd | Hospitality | 2020 |
| White Peak Paving Limited | Administrative & support | 2015 |
| White Rose Service Group Ltd | Other services | 2024 |
| White Stone Accountancy & Consulting Ltd | Professional & scientific | 2014 |
| White Swan Chesterfield Limited | Hospitality | 2024 |