| Wellgrove Stables Ltd | Arts & recreation | 2024 |
| Wellness & Mindful Supported Living Ltd | Health & social care | 2025 |
| Wellness HQ Lifestyle Ltd | Information & communication | 2017 |
| Wells Capital Investments LLP | | 2020 |
| Wells Close Management Company Limited | Households | 1986 |
| Wells Construction (Kent) Ltd | Administrative & support | 2016 |
| Wells Digital LLP | | 2014 |
| Wells Energy Ltd | Professional & scientific | 2021 |
| Wells Executive Travel Limited | Administrative & support | 2024 |
| Wells Financial Ltd | Financial services | 2011 |
| Wells Group Limited | Financial services | 2026 |
| Wells Managed Solutions Ltd | Administrative & support | 2021 |
| Wells Paddle Sports Ltd | Arts & recreation | 2024 |
| Wells Professional Partnership LLP | | 2004 |
| Wellshred Limited | Financial services | 2011 |
| Welton ACO Properties Ltd | Real estate | 2025 |
| Wenham O'Brien Limited | Construction | 2002 |
| Wentwood Quality Consulting Ltd | Information & communication | 2020 |
| Wereflect Ltd | Professional & scientific | 2026 |
| West 13 CMG Investments Limited | Real estate | 2017 |
| West Kent Gastroenterology Limited | Health & social care | 2009 |
| West Kent Paediatrics Limited | Health & social care | 2023 |
| West Kent Plumbing and Heating Limited | Construction | 2021 |
| West Kent Primary Care Collaborative Ltd | Health & social care | 2024 |
| West Kent Transport Limited | Transport & logistics | 2022 |
| West Kent Ymca Academy Trust Ltd | Education | 2014 |
| West Kent Ymca Trading Ltd | Manufacturing | 1999 |
| West Media Limited | Information & communication | 2024 |
| West One Residence Limited | Real estate | 2017 |
| WEST9 Communications Ltd | Professional & scientific | 2012 |
| Westgate Management Company Limited | Households | 1994 |
| Westie Investments Limited | Financial services | 2017 |
| Westmere Drive Management Limited | Real estate | 1999 |
| Westminster Homecare Limited | Health & social care | 1997 |
| Westmore Construction Limited | Extraterritorial | 2002 |
| Westridge Construction Limited | Construction | 1990 |
| Westrovia Court RTM Company Limited | Households | 2019 |
| Wethrivetogether Outreach CIC | Education | 2025 |
| WFM Print Solutions Limited | Manufacturing | 2009 |
| WFS Investments Ltd | Real estate | 2011 |
| Wharf Store Limited | Financial services | 2022 |
| Wharf Store One Limited | Extraterritorial | 1970 |
| Wharf Store Three Limited | Financial services | 2022 |
| What the FOX Limited | Information & communication | 2018 |
| Whatman Consultancy Services Ltd | Professional & scientific | 2022 |
| Wheeler and Partners Consulting Limited | Other services | 2013 |
| Wheelers Yard Management Company Limited | Households | 2021 |
| Wheelfeast Ltd | Hospitality | 2024 |
| Wheelwrights Accounting Limited | Professional & scientific | 2022 |
| Whetstone-Vc Ltd | Professional & scientific | 2022 |
| Which Boarding School Limited | Education | 2015 |
| Whins Investments Limited | Financial services | 2022 |
| Whiskey Squared Ltd | Administrative & support | 2020 |
| White Coat Consultant Ltd | Health & social care | 2024 |
| White Home Mortgages Ltd | Financial services | 2020 |
| White Isle Investments Ltd | Financial services | 2019 |
| White Limes Limited | Real estate | 2010 |
| White Pebble Consulting Limited | Professional & scientific | 2025 |
| Whiteboard Consulting Ltd | Information & communication | 2011 |
| Whitecroft Gardens Management Ltd | Households | 2025 |
| Whitegates (Southborough) Management Company Limited | Households | 1997 |
| Whitehill Osteopaths Limited | Administrative & support | 2009 |
| Whitewolfe Vineyard Ltd | Agriculture & fishing | 2019 |
| Whitewolfe Wines LLP | | 2019 |
| Whitmar (Holdings) Ltd | Professional & scientific | 2003 |
| Whitmar Publications Limited | Information & communication | 1988 |
| Wholesalers Trade Finance Limited | Financial services | 1998 |
| Whym.Global Ltd. | Information & communication | 2013 |
| Wickison Scenic Art Limited | Professional & scientific | 2013 |
| Wicomms Telecom Ltd | Information & communication | 2020 |
| Wig-O-Mania.Com Limited | Wholesale & retail | 2007 |
| Wiggle and DOT Ltd | Manufacturing | 2024 |
| Wiggle Motion Limited | Professional & scientific | 2019 |
| Wiiisdom UK Ltd | Information & communication | 2013 |
| Wild Aster Retail Limited | Wholesale & retail | 2025 |
| Wild Beast Art Limited | Wholesale & retail | 2025 |
| Wild Pair Limited | Information & communication | 2025 |
| Wild Seed Publishing Ltd | Arts & recreation | 2023 |
| Wildfire Advisory LLP | | 2025 |
| Will's Wines Ltd | Professional & scientific | 2023 |
| Willetts Property Services Ltd | Professional & scientific | 2014 |
| William Burkett Ltd | Real estate | 2019 |
| William Croxson & Son,Limited | Wholesale & retail | 1901 |
| William Watkins Limited | Real estate | 1996 |
| Williamson Racing Limited | Arts & recreation | 2019 |
| Willie Gunn LLP | | 2013 |
| Willow Court Farm Ltd | Hospitality | 2004 |
| Willow Leaf Limited | Real estate | 2022 |
| Willow Leaf Publishing Ltd | Information & communication | 2012 |
| Willow Path Creative Ltd | Professional & scientific | 2024 |
| Willows Birds of Prey Ltd | Other services | 2016 |
| Willows One Ltd | Professional & scientific | 2013 |
| Willowside Property Ltd | Real estate | 2021 |
| Wills Corner Ltd | Hospitality | 2023 |
| Wilrun Limited | Professional & scientific | 2006 |
| Wilson Harper Property Ltd | Real estate | 2019 |
| Windmill Farm Residents Company Limited | Households | 2004 |
| Window Industries Limited | Wholesale & retail | 1999 |
| Windsor Media Ltd | Manufacturing | 2010 |
| Windyridge Holdings Limited | Real estate | 2015 |