| West Spring Stud Ltd | Agriculture & fishing | 2018 |
| Westbery Limited | Real estate | 2023 |
| Westborough Mews (Maidstone) Management Limited | Households | 2005 |
| Westbuildersroofing Ltd | Construction | 2025 |
| Westbury (Sidcup) Management Limited | Households | 1982 |
| Westco Foods UK Ltd | Wholesale & retail | 2022 |
| Westco Property Developments Limited | Real estate | 1997 |
| Western Havens Ltd | Real estate | 2024 |
| Western Lights Consultancy Limited | Professional & scientific | 2022 |
| Westpoint Properties Limited | Real estate | 1997 |
| Westree Carpentry Services Ltd | Construction | 2014 |
| Weybridge Close Management Company Limited | Real estate | 2024 |
| Whad Ltd | Professional & scientific | 2024 |
| Whammy Ltd | Extraterritorial | 2009 |
| What IF Solutions Limited | Information & communication | 2004 |
| Whatever YOU DO Limited | Information & communication | 2026 |
| Whatley Family Investments Limited | Real estate | 2017 |
| Whatley Inc Limited | Administrative & support | 2009 |
| Whatley Property Group Ltd | Real estate | 2017 |
| Whatlington Car Sales Limited | Wholesale & retail | 2021 |
| Whats on Near ME Ltd | Professional & scientific | 2021 |
| Whava Ltd | Professional & scientific | 2026 |
| Wheatley Installs Limited | Construction | 2015 |
| Wheatley Plastering & Damp Solutions Limited | Construction | 2015 |
| Whent Resources LLP | | 2016 |
| Whippendell Properties Limited | Real estate | 2003 |
| Whitbourne Court Residents Association Limited | Households | 2000 |
| White Hill Engineering NDT UK Ltd | Professional & scientific | 2019 |
| White House Counselling Ltd | Health & social care | 2026 |
| White Orchard Investments Ltd | Real estate | 2025 |
| White Rose Photography Ltd | Professional & scientific | 2011 |
| White Sky Events Ltd | Real estate | 2013 |
| White Snowdrop Ltd | Wholesale & retail | 2021 |
| White Square Controls Limited | Construction | 2014 |
| Whitebeam (Coxheath) Management Company Limited | Households | 1983 |
| Whitecross Properties Limited | Construction | 1999 |
| Whitefriars Wharf Management Company Limited | Households | 2003 |
| Whitehall IT Services Limited | Information & communication | 2026 |
| WHITEHALL4242 Ltd | Professional & scientific | 2024 |
| Whitehead Lawyers Limited | Professional & scientific | 2001 |
| Whitehead Monckton Charitable Foundation | Professional & scientific | 2010 |
| Whitehead Monckton Employee Ownership Trustee Limited | Professional & scientific | 2025 |
| Whitehead Monckton Holdings Limited | Professional & scientific | 2022 |
| Whitehead Monckton Limited | Professional & scientific | 2013 |
| Whitehead Monckton Wealth Management Limited | Professional & scientific | 2013 |
| Whitehorse SSS Ltd | Administrative & support | 2024 |
| Whites of Kent (Faversham) Limited | Wholesale & retail | 1953 |
| Whitesea(Uk) Limited | Real estate | 2016 |
| Whitestones Property and Investments Ltd | Real estate | 2024 |
| Whiting Group Ltd | Financial services | 1986 |
| Whitstable Holiday Homes Limited | Hospitality | 2010 |
| Whizzco Limited | Financial services | 2012 |
| Who'D a Thought IT (Kent) Limited | Hospitality | 2017 |
| Wick Point Consulting Ltd | Information & communication | 2010 |
| Wiek Corporation Limited | Real estate | 2011 |
| Wiki-Tech Limited | Information & communication | 2022 |
| Wilbury Care Home Holdings Ltd | Financial services | 2026 |
| Wilbury Care Home Ltd | Health & social care | 2006 |
| Wilcox UK & US Tax Services Limited | Professional & scientific | 2017 |
| Wild Clan Company Ltd | Wholesale & retail | 2023 |
| Wild Frontier Studios Ltd | Information & communication | 2021 |
| Wild Kabn Kitchen LLP | | 2023 |
| Wild Spaces Fund | Arts & recreation | 2011 |
| Wild Times Woodland Adventures CIC | Agriculture & fishing | 2014 |
| Wild Together Learning Ltd | Education | 2026 |
| Wildbear Production Management Ltd | Arts & recreation | 2022 |
| Wilder Carbon Ltd | Professional & scientific | 2021 |
| Wilder Fitness Ltd | Arts & recreation | 2024 |
| Wilder Health Ltd | Professional & scientific | 2026 |
| Wildhorus Limited | Agriculture & fishing | 2000 |
| Wildrev Adventures Ltd | Administrative & support | 2025 |
| Wildride Events Ltd | Arts & recreation | 2011 |
| Wildrose Group Limited | Professional & scientific | 2024 |
| Wildview Limited | Construction | 1999 |
| Wildwood Media Limited | Information & communication | 2014 |
| Wilkin Reeds Limited | Professional & scientific | 2000 |
| Will-I-Adventure? Limited | Hospitality | 2018 |
| William James Properties Group Limited | Real estate | 2017 |
| William Sibree Property Limited | Professional & scientific | 2000 |
| Williams Homes & Developments (Duke Street 1) Ltd | Professional & scientific | 2017 |
| Williams Homes & Developments Ltd | Construction | 2014 |
| Willington Court Limited | Real estate | 2002 |
| Willo Building Services Ltd | Construction | 2017 |
| Willoughby & Co. Ltd | Hospitality | 2018 |
| Willow & Brook Ltd | Administrative & support | 2023 |
| Willow Court (Freehold) Limited | Hospitality | 2002 |
| Willow MAY Corporate Ltd | Professional & scientific | 2007 |
| Willow Retail UK Ltd | Wholesale & retail | 2025 |
| Willow View Estates Limited | Construction | 2021 |
| Willpower Gems Limited | Information & communication | 2017 |
| Willsons Road Limited | Households | 2023 |
| Wilmot Contractors Limited | Construction | 2018 |
| Wilopsys Limited | Real estate | 2017 |
| Wilson Plumbing Limited | Construction | 2017 |
| Wimpole Estates Limited | Construction | 1994 |
| Wimpole Group Ltd | Financial services | 2017 |
| Winchester (Construction) Limited | | 1987 |
| Winconsult Health Limited | Health & social care | 2025 |
| Window Fit Direct Ltd | Construction | 2020 |
| Window FIX Direct Kent Ltd | Construction | 2020 |