| Wimborne Motors Limited | Wholesale & retail | 1982 |
| Wimborne Nursing Agency Limited | Administrative & support | 2004 |
| Wimborne Optical Ltd | Health & social care | 2014 |
| Wimborne Osteopathic Clinic Limited | Health & social care | 2017 |
| Wimborne Pet Centre Limited | Wholesale & retail | 2015 |
| Wimborne Photo Centre Limited | Professional & scientific | 2009 |
| Wimborne Pizza Kebab Limited | Hospitality | 2024 |
| Wimborne Pizza Ltd | Hospitality | 2024 |
| Wimborne Properties Limited | Real estate | 2015 |
| Wimborne Property Services Limited | Construction | 2025 |
| Wimborne Psychology Ltd | Administrative & support | 2022 |
| Wimborne PUB Co Ltd | Hospitality | 2024 |
| Wimborne Rising Ltd | Hospitality | 2022 |
| Wimborne Roofing Specialists Limited | Construction | 2007 |
| Wimborne Scaffolding Limited | Construction | 2014 |
| Wimborne Showground Limited | Real estate | 2020 |
| Wimborne Skips and Salvage Limited | Water & waste | 2016 |
| Wimborne Spice Ltd | Hospitality | 2024 |
| Wimborne Town FC Academy Ltd. | Education | 2023 |
| Wimborne Town Football Club Limited | Arts & recreation | 1998 |
| Wimborne Turf Company Limited | Agriculture & fishing | 2002 |
| Wimborne Tyres & Auto Centre Ltd | Wholesale & retail | 2008 |
| Wimborne UK Ltd | Financial services | 2023 |
| Wimborne WAR on Waste CIC | Professional & scientific | 2020 |
| Wimborne Wellness Centre Limited | Health & social care | 2016 |
| Wincott Services Ltd | Information & communication | 2017 |
| Windgreen Properties Ltd | Real estate | 2022 |
| Wink Design Limited | Wholesale & retail | 2013 |
| Winniesoton Ltd | Wholesale & retail | 2019 |
| Winview Limited | Information & communication | 1994 |
| Wire and Cable Supplies Ltd | Wholesale & retail | 2019 |
| Wishfully Ltd | Professional & scientific | 2024 |
| Witchware Ltd | Wholesale & retail | 2018 |
| WIZ Athletic Ltd | Other services | 2021 |
| Wizarding Delights Limited | Hospitality | 2019 |
| WJ Consulting & Strategy Limited | Professional & scientific | 2023 |
| WJ Property & Estates Limited | Real estate | 2024 |
| WJP Associates Limited | Information & communication | 2016 |
| WLA Limited | Hospitality | 2016 |
| WMC Repairs Ltd | Wholesale & retail | 2018 |
| WN13 Ltd | Real estate | 2023 |
| WNA Holdings Limited | Real estate | 2016 |
| WNA Solutions Limited | Administrative & support | 2016 |
| Wolfpack Childcare Limited | Education | 2023 |
| Wolfram Solutions Limited | Information & communication | 2026 |
| Wood Software Ltd | Information & communication | 2022 |
| Woodbury Consulting Ltd | Information & communication | 2013 |
| Woodbury Wells Property Ltd | Real estate | 2018 |
| Woodfield Lettings Dorset Ltd | Real estate | 2018 |
| Woodforde Scott Ltd | Construction | 2007 |
| Woodland View (Broadstone) Management Company Limited | Households | 2022 |
| Woodlands Manor Estates Limited | Arts & recreation | 1991 |
| Woodlands Manor Farm Management Limited | Households | 2026 |
| Woodlands Motor Company Limited | Wholesale & retail | 2022 |
| Woodpecker Property Limited | Real estate | 2025 |
| Woolsbridge Rodent Control Ltd | Agriculture & fishing | 2021 |
| Woosey & Sons Ltd. | Construction | 2002 |
| World Wide William Ltd | Information & communication | 2021 |
| Worlds Edge Productions Limited | Arts & recreation | 2002 |
| Worldwide Veterinary Service | Professional & scientific | 2003 |
| Worthy Photonics Ltd | Professional & scientific | 2018 |
| WOW Gardens Limited | Professional & scientific | 2011 |
| WP Rail Ltd | Manufacturing | 2016 |
| WPA Consultants Ltd | Other services | 2001 |
| Wraps (UK) Limited | Extraterritorial | 1990 |
| WRC Fabrications Ltd | Manufacturing | 2016 |
| Wrights Carpentry Contractors Limited | Construction | 2002 |
| Wrought Limited | Information & communication | 2026 |
| Wsfh Limited | Real estate | 2016 |
| Wtfcgb Ltd. | Administrative & support | 2018 |
| Wulstan Residential Central LLP | | 2026 |
| Wulstan Residential Limited | Real estate | 2025 |
| Wulstan Residential Southampton 1 LLP | | 2026 |
| WW IT Consultants Limited | Information & communication | 2018 |
| Wwcs Environmental Services Limited | Administrative & support | 2004 |
| Wyatt Homes Limited | Construction | 1999 |
| Wyatt Homes South Limited | Construction | 2017 |
| Wyatt Homes Southern Limited | Construction | 2017 |
| Wyatt Investments Limited | Real estate | 2018 |
| Wyatt Land Limited | Construction | 2019 |
| Wyckhams Limited | Administrative & support | 2021 |
| Wyman Associates Limited | Professional & scientific | 2008 |
| Wysiwyg Projects Ltd | Real estate | 1996 |
| Wysiwyg Properties Limited | Professional & scientific | 2005 |
| X&C Limited | Administrative & support | 2023 |
| X15 Solutions Limited | Professional & scientific | 2016 |
| X7 Consultancy Ltd | Professional & scientific | 2024 |
| X7 Property Ltd | Real estate | 2024 |
| Xcellence Ltd | Information & communication | 2019 |
| Xcut Construction Ltd | Manufacturing | 2020 |
| Xertrex UK Ltd | Professional & scientific | 2020 |
| Xiang Think Consulting Ltd | Information & communication | 2016 |
| XL UK Ltd | Information & communication | 1997 |
| XM Architecture and Design Ltd | Professional & scientific | 2026 |
| Xmiles UK Ltd. | Wholesale & retail | 2015 |
| Xploratech Limited | Information & communication | 2023 |
| Xtraction in Action Ltd | Manufacturing | 2016 |
| XTX Consulting Limited | Professional & scientific | 2025 |
| Xwatch Safety Solutions Limited | Manufacturing | 2018 |
| Y2 Consultancy Limited | Information & communication | 2026 |