| WJS Solutions Limited | Construction | 2022 |
| WK Analytics Limited | Information & communication | 2025 |
| WMB Steele (2009) & Co. Limited | Professional & scientific | 2008 |
| WMC Haulage Ltd | Transport & logistics | 2022 |
| WMJ Rewinds Limited | Manufacturing | 2016 |
| WMM 90 Limited | Construction | 2026 |
| Wmns Wear Limited | Wholesale & retail | 2015 |
| Woburn Electrical Group Limited | Construction | 2023 |
| Woburn Farm Plants Ltd | Wholesale & retail | 2024 |
| Woburn Heating Limited | Administrative & support | 2016 |
| Woburn Village Brasserie Limited | Hospitality | 2013 |
| Wodex Investments Limited | Administrative & support | 2024 |
| WOK N Go (Bedford) Ltd | Hospitality | 2020 |
| Woking, Aldershot, and Guildford Ssdab Ltd | Information & communication | 2025 |
| Wolf of Flitwick Trading Ltd | Financial services | 2025 |
| Woli Farms Limited | Wholesale & retail | 2025 |
| Wolverine Design Ltd | Administrative & support | 2018 |
| Wolves Crown Constructions Ltd | Construction | 2016 |
| Womag Ltd | Construction | 2016 |
| Woman Ascend Network CIC | Education | 2025 |
| Women Empowerment Without Borders C.I.C. | Other services | 2024 |
| Women in Public Affairs Ltd | Other services | 2013 |
| Women of Valiance (VOW) CIC | Public administration | 2020 |
| Women's Health (UK) Ltd | Health & social care | 2012 |
| Womens Wellness Space CIC | Education | 2026 |
| Wonder Support Limited | Health & social care | 2021 |
| Wonder Works Contractors Limited | Construction | 2024 |
| Wondering Brotherhood Ltd | Wholesale & retail | 2017 |
| Wonderlab Studio Ltd | Professional & scientific | 2025 |
| Wonderland Event Bars Ltd | Hospitality | 2019 |
| Wood & Fine Limited | Extraterritorial | 2014 |
| Wood END Liveries LLP | | 2016 |
| Wood Motorsport Developments Ltd | Wholesale & retail | 2026 |
| Woodfines LLP | | 2005 |
| Woodfines Solicitors Limited | Extraterritorial | 1994 |
| Woodgate Marketing Limited | Professional & scientific | 1993 |
| Woodland Forestry Limited | Agriculture & fishing | 2018 |
| Woodland Manor Hotel Ltd | Hospitality | 2023 |
| Woodland Middle School Academy | Education | 2011 |
| Woodlands by Ember Ltd | Hospitality | 2025 |
| Woodlands Old Road Management Services Limited | Households | 1997 |
| Woods Hardwick Group Limited | Professional & scientific | 2013 |
| Woods Hardwick Limited | Professional & scientific | 1987 |
| Woods Hardwick Surveying Limited | Professional & scientific | 2001 |
| Woods Hardwick Trustee Limited | Other services | 2022 |
| Woods Training Ltd | Education | 2011 |
| Woodside Church | Other services | 2019 |
| Woodside Garage (Maulden) Limited | Wholesale & retail | 2003 |
| Woodside Travel Limited | Transport & logistics | 2015 |
| Woodstone Commercial Limited | Administrative & support | 2017 |
| Woodstone Surfaces Limited | Construction | 2012 |
| Woodwerx Limited | Manufacturing | 2016 |
| Woodworth's Limited | Real estate | 2019 |
| Woody Distribution Ltd | Transport & logistics | 2021 |
| Woody Neale Ltd | Manufacturing | 2023 |
| Woof Neigh Therapy Limited | Administrative & support | 2006 |
| Woof Stop Ltd | Other services | 2017 |
| Woofstop Training Ltd | Other services | 2020 |
| Woolfy Sport Ltd | Arts & recreation | 2021 |
| Woolgar Electrical Limited | Extraterritorial | 2016 |
| Woolly Mammoth Media Ltd | Information & communication | 2019 |
| Woolwich and Kent Property Maintenance Ltd | Administrative & support | 2025 |
| Wootton Academy Trust | Education | 2011 |
| Wootton Cleaning Wizards Ltd | Administrative & support | 2025 |
| Wootton Garage Limited | Wholesale & retail | 1979 |
| Wootton Green Management Limited | Households | 1993 |
| Word of Hope Limited | Manufacturing | 2025 |
| Wordsetfree Ltd | Arts & recreation | 2023 |
| Workdeskpro Ltd | Information & communication | 2013 |
| Worklink Ltd | Information & communication | 2020 |
| Workpass Limited | Information & communication | 2008 |
| Worksmart HR Solutions Limited | Administrative & support | 2015 |
| Worksmart Professional Services Limited | Administrative & support | 2019 |
| Workteamexpress Ltd | Wholesale & retail | 2026 |
| Workwise HR Consulting Limited | Administrative & support | 2022 |
| World Foods (Bedford) Ltd | Wholesale & retail | 2022 |
| World Fragrances Ltd | Manufacturing | 2025 |
| World Imperio Ltd | Transport & logistics | 2020 |
| World of Origins Limited | Wholesale & retail | 2012 |
| World Sport Fishing Limited | Administrative & support | 2001 |
| Worrall Builders & Maintenance Services Ltd | Construction | 2023 |
| Worrall Building Services Ltd | Construction | 2024 |
| Worrall Consultancy Services Ltd | Professional & scientific | 2024 |
| Worrall Group Ltd | Financial services | 2024 |
| Worrall Property Solutions Ltd | Real estate | 2024 |
| Worth Family 1918 Limited | Real estate | 2014 |
| Worth Family Holdings Limited | Real estate | 2013 |
| WOT NO Spanner's Ltd | Wholesale & retail | 2026 |
| WOW Ingredients Ltd | Manufacturing | 2025 |
| WOW Treats Ltd | Hospitality | 2021 |
| Wpgh Ltd | Real estate | 2026 |
| WQK Tailoring Ltd | Manufacturing | 2023 |
| Wrdcc Limited | Wholesale & retail | 2023 |
| Wren Commercial Group Ltd | Professional & scientific | 2026 |
| WRG Limited | Professional & scientific | 2019 |
| Wrico Contracting Limited | Construction | 2010 |
| Wridell Construction Limited | Construction | 2015 |
| Wright Connections Limited | Professional & scientific | 2003 |
| Wright Roofing and Carpentry Ltd | Manufacturing | 2024 |
| Wrights Decorating Limited | Construction | 2020 |