| Warner Drive Limited | Real estate | 2020 |
| Warners Gardens Limited | Real estate | 2012 |
| Warren Communications Limited | Information & communication | 2000 |
| Watermeadow Homes (Kettering) Ltd | Construction | 2020 |
| Watermeadow Homes (Towcester Road) 2 Ltd | Real estate | 2020 |
| Watermeadow Homes (Towcester Road) Ltd | Construction | 2018 |
| Watermeadow Homes 1 Ltd | Construction | 2020 |
| Watermeadow Homes Limited | Real estate | 2019 |
| Watermeadow Properties Limited | Real estate | 2019 |
| Wbco Holdings Ltd | Wholesale & retail | 2021 |
| WD Academy Ltd | Education | 2025 |
| WE Travel Consultants Limited | Administrative & support | 2025 |
| Webb Consultancy Limited | Information & communication | 2008 |
| Well Fancy That! Limited | Hospitality | 2024 |
| West END Farm (Community) P.V. C.I.C. | Energy | 2015 |
| West END Farm PV Ltd | Energy | 2015 |
| Westcliff RFC (Trading) Limited | Arts & recreation | 2016 |
| Westcliff Rugby Football Club Limited | Arts & recreation | 1954 |
| Westfield Farm Energy Centre Limited | Energy | 2025 |
| Westley Brewing Company Ltd. | Manufacturing | 2015 |
| Westminster House Residential Care Limited | Hospitality | 2002 |
| Weston Commercial Limited | Financial services | 2023 |
| Weston Equity Limited | Administrative & support | 2021 |
| Weston Financial Limited | Financial services | 2016 |
| WG TEK Ltd | Information & communication | 2023 |
| WGC Construction Ltd | Construction | 2019 |
| White Cat Consultancy Ltd | Construction | 2004 |
| Whogloo Ltd | Information & communication | 2022 |
| Wickard Cadelyn Ltd | Financial services | 2026 |
| Wil-O-Cur Events Limited | Public administration | 2023 |
| Williams & Donovan (Benfleet) Lettings Limited | Real estate | 2013 |
| Williams & Donovan Lettings Holdings Ltd | Real estate | 2022 |
| Williams & Donovan Lettings Limited | Real estate | 2004 |
| Williams & Donovan Sales (Benfleet) Ltd | Real estate | 2013 |
| Williams and Donovan Limited | Real estate | 2002 |
| Williams Works Limited | Financial services | 2021 |
| Willow Apps Ltd | Information & communication | 2022 |
| Willward Property Limited | Real estate | 2019 |
| Windows Direct Essex Limited | Construction | 2018 |
| Winnie WOO Ltd | Hospitality | 2025 |
| Wise Machinery Services Limited | Other services | 2023 |
| Witch Burger and Outside Catering Ltd | Hospitality | 2025 |
| Wolf Brothers Limited | Real estate | 2015 |
| Wolfe Securities Limited | Construction | 1982 |
| Wolfpack Properties Limited | Real estate | 2013 |
| Wooden Post Limited | Extraterritorial | 2022 |
| Woodhouse Farm Solar PV Limited | Energy | 2009 |
| Woollard Independent Financial Planning Ltd. | Financial services | 2012 |
| Woollard Properties Limited | Real estate | 2022 |
| Woollard Property Group Limited | Real estate | 2021 |
| World Champion Imprint Club Limited | Information & communication | 2022 |
| Worldspan Freight Services Limited | Transport & logistics | 1977 |
| Wrens Properties UK Ltd | Real estate | 2021 |
| Wrightco Management Solutions Ltd | Financial services | 2025 |
| Wuzzos Ltd | Manufacturing | 2019 |
| Wyatt & Wyatt Therapies Limited | Health & social care | 2015 |
| Xelam Limited | Financial services | 2020 |
| Xform Properties Limited | Real estate | 2023 |
| XUE MEI Huin Limited | Hospitality | 2019 |
| Ycic Ltd | Information & communication | 2021 |
| Yerac Ltd | Arts & recreation | 2021 |
| Your Buddy Ltd | Extraterritorial | 2021 |
| Your Care Consultancy Limited | Professional & scientific | 2017 |
| Your Garden Fairy Limited | Extraterritorial | 2009 |
| Yuki London Properties Ltd | Professional & scientific | 2013 |
| Zeeshan Consulting Ltd | Professional & scientific | 2025 |
| Zendell Ltd. | Wholesale & retail | 2007 |
| Zensum Packaging Ltd | Wholesale & retail | 2025 |
| Zest City Limited | Professional & scientific | 2014 |
| Zeto Property Solutions Limited | Real estate | 2021 |
| Zeus Professional Services Ltd | Professional & scientific | 2006 |
| Zhen Foods UK Ltd | Wholesale & retail | 2025 |
| Ziktarc Ltd | Wholesale & retail | 2021 |
| ZIP Crowd Ltd | Real estate | 2021 |
| Ziphouse Developments Ltd | Real estate | 2021 |
| Ziphouse Management Ltd | Real estate | 2022 |
| Ziphouse Property Ltd | Real estate | 2022 |
| Ziphouse Property SPV2 Ltd | Real estate | 2022 |
| Ziphouse Property SPV3 Ltd | Real estate | 2023 |
| Ziphouse Property SPV4 Ltd | Real estate | 2024 |
| Ziphouse Property SPV5 Ltd | Real estate | 2024 |
| Ziphouse Property SPV6 Ltd | Real estate | 2024 |
| Ziphouse Property SPV7 Ltd | Real estate | 2024 |
| Ziphouse Property SPV8 Ltd | Real estate | 2024 |
| Ziphouse Property SPV9 Ltd | Real estate | 2024 |