| Wancom Services Ltd | Other services | 2020 |
| Wandering Goose Ltd | Professional & scientific | 2017 |
| Wanderlust INK Ltd | Arts & recreation | 2023 |
| Wandle Car Wash Limited | Wholesale & retail | 2024 |
| Wanlaixuan Limited | Hospitality | 2024 |
| Want a Trader Ltd | Information & communication | 2020 |
| Wardell Mews Residents Company Limited | Households | 2013 |
| Wardhere Ltd | Transport & logistics | 2025 |
| Wardley Hall Court RTM Company Limited | Households | 2012 |
| Warehouse One Distribution Ltd | Transport & logistics | 2007 |
| Warham Resident's Association Limited | Households | 1969 |
| Waris & Son's Ltd | Real estate | 2023 |
| Warlingham (Limpsfield Road) Residents Management Company Limited | Households | 2025 |
| Warner Electrical Services Limited | Construction | 2015 |
| Warnford Road Management Company Limited | Households | 2007 |
| Warren Day Ltd | Professional & scientific | 2019 |
| Warren Waste Limited | Water & waste | 2012 |
| Warriner Management Company Limited | Households | 2000 |
| Warwick Court (Stratford Upon Avon) Limited | Households | 2000 |
| Wassaa Ltd | Professional & scientific | 2023 |
| WATCHES2U International Limited | Wholesale & retail | 2002 |
| Watercress Meadows Management Company Limited | Households | 1991 |
| Waterfall Real Estate Ltd | Real estate | 2021 |
| Waterford House Limited | Households | 1986 |
| Waterhouse Properties Limited | Professional & scientific | 2005 |
| Waterloo House Management Company Limited | Households | 2007 |
| Waterloo Park Management Limited | Households | 1985 |
| Waterloo Park RTM Limited | Households | 2011 |
| Waterman's Reach Management (Oxford) Limited | Households | 1990 |
| Watermans Cleaning Services Limited | Administrative & support | 2012 |
| Watermeadow (Basingstoke) Management Company Limited | Households | 2016 |
| Watermill Grill Limited | Hospitality | 2023 |
| Waters Edge (Eynesbury) Management Company Limited | Households | 2003 |
| Waters Meet (Huntingdon) Management Company Limited | Real estate | 2005 |
| Waterside (Wentworth Road) Residents Management Company Limited | Households | 2012 |
| Waterside (Woking) Management Company Limited | Households | 2004 |
| Waterside Kingsbridge Road (Blocks a, B & C) Management Company Limited | Households | 1995 |
| Waterside Kingsbridge Road (Blocks D, E & F) Management Company Limited | Households | 1995 |
| Waterside Quarter Estate Management Company Limited | Households | 2020 |
| Waterside Quarter Residents Management Company Limited | Households | 2020 |
| Waterside Sale Management Company NO 2 Limited | Households | 2003 |
| Waterside Sale Management Company NO. 3 Limited | Households | 2004 |
| Watertight Solutions London Ltd | Construction | 2020 |
| Watling House Management Company Limited | Households | 2023 |
| Watson Riley Developments Ltd | Construction | 2025 |
| Watson's Management Services Ltd | Construction | 2016 |
| Wattana Solutions Limited | Information & communication | 2024 |
| Wattox Investments Ltd | Real estate | 2024 |
| Wave Artisan Gelato Ltd | Hospitality | 2021 |
| Wave HR Consultancy Limited | Administrative & support | 2021 |
| Wave Trust | Education | 1999 |
| Wavel Court (Freehold) Limited | Households | 2009 |
| Wavertree Automatics Limited | Extraterritorial | 2025 |
| Wavertree RTM Company Limited | Households | 2024 |
| Wavvi Systems Ltd | Information & communication | 2025 |
| WAY2BUILD Ltd | Real estate | 2025 |
| WAY2UNI Limited | Professional & scientific | 2018 |
| Waycrest Integrated Services Limited | Real estate | 2016 |
| Wayforward Global Ltd | Real estate | 2025 |
| Wayman Secretaries Limited | Professional & scientific | 2007 |
| Wayne's Industry Ltd | Information & communication | 2020 |
| Wayne's JB Brown Limited | Information & communication | 2025 |
| Wayra Properties Ltd | Real estate | 2026 |
| Wazobia Market Ltd | Wholesale & retail | 2026 |
| Wazza Electrical Ltd | Construction | 2024 |
| WBA Property Investments Limited | Households | 2023 |
| WC Plumbing and Renovations Ltd | Construction | 2023 |
| WD International Ltd | Other services | 2024 |
| WDO Community Interest Company | Arts & recreation | 2019 |
| WE ARE Between Limited | Information & communication | 2014 |
| WE ARE Liberty Limited | Professional & scientific | 2018 |
| WE ARE NOT Different C.I.C. | Health & social care | 2025 |
| WE ARE Reactive UK Ltd | Construction | 2023 |
| WE ARE Solutions Ltd | Administrative & support | 2018 |
| WE ARE Utcai C.I.C. | Education | 2022 |
| WE Buy ANY Caravan Nationwide Limited | Wholesale & retail | 2022 |
| WE Buy ANY Motor Home Limited | Wholesale & retail | 2024 |
| WE Care 24/7 Limited | Health & social care | 2013 |
| WE Care Alliance Limited | Health & social care | 2023 |
| WE CARE4CARE Limited | Health & social care | 2019 |
| WE Connect Academy Ltd | Professional & scientific | 2022 |
| WE Connect Support Ltd | Professional & scientific | 2022 |
| WE Detail Luxury Limited | Wholesale & retail | 2026 |
| WE DO IT ALL Property Services Ltd | Construction | 2025 |
| WE Live Property Ltd | Real estate | 2019 |
| WE the Festival People Limited | Professional & scientific | 2023 |
| We-Care Limited | Information & communication | 2025 |
| We-Desi Ltd | Hospitality | 2024 |
| Wealdstone Investment Limited | Real estate | 2014 |
| Wealth Connection Ltd | Financial services | 2010 |
| Wealth Infinity Consulting Co Ltd | Financial services | 2025 |
| Wealth Whisperer Limited | Professional & scientific | 2021 |
| Wear Communications Ltd | Administrative & support | 2014 |
| Wearecliqued Ltd | Professional & scientific | 2024 |
| Weatherproof Roofing & Contractors Ltd | Construction | 2022 |
| Weatherproof Roofing & Services Ltd | Construction | 2018 |
| Weaver Close Limited | Professional & scientific | 2018 |
| Weaver's Court (Pickmere) Management Limited | Households | 2001 |
| Weaverfix Ltd | Real estate | 2024 |
| Weavers Meadow (Trowbridge) Management Company Limited | Households | 2022 |