| Vivvi Technology Limited | Information & communication | 2020 |
| Vntechsolutions Limited | Information & communication | 2011 |
| Voipodo Ltd | Information & communication | 2013 |
| Volmatch Community CIC | Health & social care | 2024 |
| Volmatch Ltd | Administrative & support | 2020 |
| VR Surgical Consulting Ltd | Health & social care | 2012 |
| VSV Trading Ltd | Wholesale & retail | 2019 |
| Vwstudio Ltd | Wholesale & retail | 2025 |
| W & H (Romac) Limited | Construction | 2008 |
| W & J Investments Ltd | Real estate | 2022 |
| W and B Antiques Ltd | Wholesale & retail | 2014 |
| W.C. Portables Ltd | Construction | 2015 |
| W2 Marketing Consultancy Limited | Professional & scientific | 2016 |
| Wade Property Services Limited | Real estate | 2022 |
| Wajiha Limited | Real estate | 2025 |
| Walking Spanish Ltd | Information & communication | 2011 |
| Wall Consulting Limited | Professional & scientific | 2017 |
| Wallace Consulting Limited | Administrative & support | 2013 |
| Wallpaper Hangers Direct Limited | Construction | 2019 |
| Wandervansuk Ltd | Wholesale & retail | 2026 |
| Wannacry Security Ltd | Information & communication | 2018 |
| Ward Booth Limited | Administrative & support | 2021 |
| Warm Blue Digital Ltd | Professional & scientific | 2021 |
| Warren Place Management Company Limited | Households | 2018 |
| Warrior Elite Medical Solutions Ltd | Wholesale & retail | 2024 |
| Water Lane Community Arts Studio CIC | Arts & recreation | 2026 |
| Water Lane Cottage Limited | Health & social care | 2025 |
| Waterless Cleaning Limited | Manufacturing | 2016 |
| Waterman Properties Limited | Real estate | 2021 |
| Waterside Hospitality Limited | Hospitality | 2024 |
| Watson Fleming Limited | Administrative & support | 2002 |
| Watson Trading Limited | Wholesale & retail | 2026 |
| Way of Life Fitness Limited | Arts & recreation | 2015 |
| Waytocare Ltd | Health & social care | 2023 |
| WE ARE Boost Agency Ltd | Professional & scientific | 2023 |
| WE ARE Loyal Ltd | Other services | 2018 |
| WE ARE Regular Limited | Manufacturing | 2024 |
| WE ARE Starseed Ltd | Wholesale & retail | 2017 |
| WE ARE Starseed Media Ltd | Professional & scientific | 2018 |
| Websmyth Ltd | Professional & scientific | 2019 |
| Wehealth Oriental Ltd | Health & social care | 2025 |
| Weig-Karton UK Limited | Wholesale & retail | 1944 |
| Welcome to the Jungle Limited | Administrative & support | 2025 |
| Weldon Beesly LLP | | 2017 |
| Welgard Fire and Security Systems Limited | Administrative & support | 2016 |
| Weliit Ltd | Professional & scientific | 2023 |
| Wellness @ Amelia Rose Ltd | Health & social care | 2025 |
| Wellness in Motion Limited | Health & social care | 2026 |
| Wells Waste & Demolition Ltd | Construction | 2023 |
| Welwyn Garden Alarms Ltd | Administrative & support | 2001 |
| Wereset Group Ltd | Wholesale & retail | 2026 |
| WES & Co Property Ltd | Real estate | 2023 |
| Wescomb and Reed Ltd | Construction | 2025 |
| West Court Building Management Limited | Households | 2019 |
| West Montrose Ltd | Extraterritorial | 2009 |
| Westcott Wills Limited | Professional & scientific | 2017 |
| Westoby Projects Ltd | Construction | 2025 |
| Westwood Mews Ltd | Real estate | 2009 |
| What Else Ltd | Extraterritorial | 1995 |
| When Women Pray (WWP) Essex CIC | Education | 2025 |
| WHISTLE4 Ltd | Construction | 2023 |
| White Iron Property Limited | Construction | 2018 |
| White IVY Homes Limited | Real estate | 2017 |
| White Lodge Stud Ltd | Agriculture & fishing | 2023 |
| White Stag Developments Ltd | Construction | 2026 |
| Whitehall Grange LLP | | 2025 |
| Whitelocust Ltd | Arts & recreation | 2024 |
| White’S Building, Plumbing & Heating Ltd | Construction | 2025 |
| Whittles Management Company Limited | Households | 2018 |
| Wholesale Flowers Nationwide Limited | Wholesale & retail | 2014 |
| Wholesale Tiles Ltd | Wholesale & retail | 2022 |
| Wicken Group Ltd | Construction | 2021 |
| Wiggleland Ltd | Arts & recreation | 2025 |
| Wiggly Willow CIC | Health & social care | 2019 |
| Wiggs Carpentry & Building Limited | Construction | 2010 |
| Wihl Holdco Limited | Financial services | 2017 |
| Wilben Ltd | Wholesale & retail | 2024 |
| Wild Coast Property Group Ltd | Construction | 2026 |
| Wild Swig Ltd | Wholesale & retail | 2024 |
| Wildling Drinks Ltd | Manufacturing | 2021 |
| Will Gilburt Limited | Information & communication | 2019 |
| Will Taylor Landscapes Limited | Administrative & support | 2017 |
| Willcox Wealth Management Ltd | Financial services | 2019 |
| William & Edward Holdings Ltd | Professional & scientific | 2026 |
| William Joseph Holdings Ltd | Other services | 2015 |
| Willow Heating Limited | Construction | 2014 |
| Willside Limited | Construction | 2015 |
| Willtord Properties Ltd | Real estate | 2025 |
| Wilson and Wood of Stortford Ltd. | Administrative & support | 2014 |
| Wilton Rest Homes Limited | Health & social care | 1993 |
| WIN4 Business Solutions Ltd | Administrative & support | 2016 |
| Windhill House Limited | Households | 1991 |
| Windhill Investments (Perry Green) Limited | Real estate | 2023 |
| Windhill Investments UK Ltd | Real estate | 2018 |
| Wink Academy Ltd | Education | 2024 |
| Wink Beauty Limited | Other services | 2021 |
| Wink Beauty Radlett Ltd | Other services | 2025 |
| Winning Words Ltd | Extraterritorial | 2014 |
| Winstree Business Services Limited | Administrative & support | 2012 |
| Wipe Away Valeting Limited | Administrative & support | 2024 |