| Vuva Transport Ltd | Transport & logistics | 2013 |
| Vuyierue Limited | Public administration | 2023 |
| VV24 Limited | Health & social care | 2012 |
| VVB Joinery Limited | Construction | 2021 |
| Vvip London Limited | Wholesale & retail | 2020 |
| VVM Carpentry and Joinery Ltd | Manufacturing | 2026 |
| VVR Trading Ltd | Wholesale & retail | 2017 |
| VVV London Ltd | Arts & recreation | 2026 |
| Vyas and Co. Ltd | Professional & scientific | 2010 |
| Vyas Design and Architecture Services Ltd | Professional & scientific | 2025 |
| Vyltroff Decorating Ltd | Construction | 2017 |
| Vyynaro Limited | Wholesale & retail | 2025 |
| VZS Construction Ltd | Construction | 2019 |
| W a 26 Ltd | Other services | 2022 |
| W Construction Group Ltd | Construction | 2026 |
| W J Crawford Properties Ltd | Real estate | 2018 |
| W Martin Roofing & Contractors Ltd | Construction | 2025 |
| W Riaz Ltd | Wholesale & retail | 2020 |
| W.C.Shade & Sons Limited | Construction | 1956 |
| W.G. Beaumont & SON Limited | Construction | 1959 |
| W.L.Cooke(Precision Tools)Limited | Wholesale & retail | 1948 |
| W.O.W Nails Salon Ltd | Other services | 2013 |
| W.S.Building & Development Limited | Financial services | 1953 |
| WA Screeding Ltd | Construction | 2022 |
| Wa&Z Limited | Professional & scientific | 2025 |
| Waffle on Studios Ltd | Arts & recreation | 2022 |
| Wageme.Com Ltd | Financial services | 2012 |
| Wageo Limited | Professional & scientific | 2009 |
| Wagma Ltd | Wholesale & retail | 2026 |
| Wagstaff Investments Limited | Real estate | 2023 |
| WAH WAL Ltd | Real estate | 2022 |
| WAH Wheels.Com Limited | Wholesale & retail | 2022 |
| Wahab Consultancy Limited | Financial services | 2014 |
| Wahab Wahab Ltd | Transport & logistics | 2026 |
| Waheed UL Islam Ltd | Wholesale & retail | 2025 |
| Wahris Property Group Ltd | Real estate | 2025 |
| Wails Ltd | Wholesale & retail | 2021 |
| Wainwright Engineering Limited | Construction | 2007 |
| Wakefield & Co (Self Adhesive) Labels Limited | Manufacturing | 2001 |
| Wakefield 1961 Ltd | Professional & scientific | 2016 |
| Wakefield 85 Limited | Real estate | 2020 |
| Waleed Limited | Health & social care | 2015 |
| Walia Investments Ltd | Real estate | 2024 |
| Walk by Faith Ltd | Wholesale & retail | 2025 |
| Walker House Ltd | Health & social care | 2024 |
| Walkies App Limited | Information & communication | 2022 |
| Wall Close Investments Limited | Financial services | 2013 |
| Wall Street Finance Law Ltd | Financial services | 2023 |
| Wall-Kido Ltd | Construction | 2016 |
| Wallace Property Estates Ltd | Real estate | 2024 |
| Wallace Property Holdings Ltd | Real estate | 2023 |
| Wallace Property Management Ltd | Real estate | 2024 |
| Wallerbean Limited | Wholesale & retail | 2008 |
| Walnut Samba International Ltd | Professional & scientific | 2025 |
| Walpole (Ealing) Limited | Real estate | 2024 |
| Waltham Forest Community and Family Health Services Limited | Health & social care | 2006 |
| Walthamstow PUB Co Ltd | Hospitality | 2024 |
| Walton Road Investments Ltd | Real estate | 2024 |
| Wamsar Limited | Wholesale & retail | 2025 |
| Wannabe Management Limited | Professional & scientific | 1998 |
| WAR Waste Management Ltd | Water & waste | 2024 |
| Ward & Ward Enterprises Ltd | Construction | 2009 |
| Ward Britten Investments Ltd | Hospitality | 2017 |
| Ward Builders NO.1 Ltd | Construction | 2025 |
| Wardenshire Ltd | Professional & scientific | 2024 |
| Wardslandscapes Ltd | Construction | 2022 |
| Ware Motorama Limited | Transport & logistics | 1978 |
| Wariah Investment Ltd | Real estate | 2022 |
| Warm & Cold Maintenance Ltd | Construction | 2017 |
| Warm House Heating and Plumbing Ltd | Construction | 2023 |
| Warmth in UK Limited | Construction | 2025 |
| Warren Bridge Real Estate Ltd | Real estate | 2025 |
| Warren House Properties Limited | Real estate | 2023 |
| Warren Wood Paintball Limited | Arts & recreation | 2001 |
| Wash and Go Ltd | Other services | 2026 |
| Wasps Property Limited | Construction | 2026 |
| Wassel Ltd | Real estate | 2017 |
| Waste Predators Limited | Water & waste | 2025 |
| Waste Trade Energy Ltd | Water & waste | 2021 |
| Waste Trade Glass Ltd | Water & waste | 2021 |
| Waste Trade Metal Ltd | Water & waste | 2021 |
| Waste Trade Online Ltd | Water & waste | 2021 |
| Waste Trade Plastic Ltd | Water & waste | 2021 |
| WAT Construction Management Ltd | Professional & scientific | 2024 |
| Wataha Ltd | Education | 2018 |
| Wataha Resourcing Ltd | Administrative & support | 2021 |
| Water & Environmental Resource Management Limited | Construction | 1997 |
| Water Dynamics Commercial Services Ltd | Administrative & support | 2026 |
| Watermarks Essex Ltd | Wholesale & retail | 2025 |
| Wateroracle Limited | Other services | 1998 |
| Waterproofingroofs Ltd | Construction | 2018 |
| Watford Coffee Ltd | Hospitality | 2025 |
| Wattoo X Limited | Wholesale & retail | 2024 |
| Wavy Line Limited | Wholesale & retail | 2024 |
| WAX Centre Distribution Ltd | Wholesale & retail | 2015 |
| Way to Success Limited | Transport & logistics | 2025 |
| Wayfinder Coaching Ltd | Other services | 2021 |
| Wayfinder Systems Ltd | Professional & scientific | 2021 |
| Ways Ventures Ltd | Financial services | 2026 |
| WBM International Ltd | Wholesale & retail | 2021 |