| Voltage Electrics Ltd | Construction | 2023 |
| Volvic Consulting Ltd | Professional & scientific | 2025 |
| Volvo Car Financial Services UK Limited | Financial services | 2020 |
| Volvo Car UK Limited | Wholesale & retail | 1988 |
| Vortotech Limited | Information & communication | 2020 |
| Vostochnaya Technica UK Limited | Wholesale & retail | 2004 |
| Voyage Accessories Limited | Wholesale & retail | 2007 |
| Voyeur Music Ltd | Information & communication | 2015 |
| VPM Property Limited | Real estate | 2023 |
| VS Food Ventures Limited | Hospitality | 2023 |
| VT Brickwork Ltd | Construction | 2018 |
| Vtol Technologies Limited | Manufacturing | 2008 |
| VUE Group Holding UK Ltd | Financial services | 2022 |
| Vueav Holding UK Ltd | Financial services | 2022 |
| Vulcan Advisory Partners Limited | Professional & scientific | 2026 |
| VV Sales Ltd | Wholesale & retail | 2014 |
| W & Q Estates Ltd | Real estate | 2024 |
| W B P Management Limited | Professional & scientific | 1989 |
| W Cars GT3 Ltd | Wholesale & retail | 2019 |
| W Emmett Farming LLP | | 2024 |
| W.H.Barrs & SON Limited | Manufacturing | 1956 |
| W.S.D Holdings (South) Ltd | Financial services | 2025 |
| W4 Digital Limited | Information & communication | 2014 |
| Wacky Woods CIC | Education | 2025 |
| Waddington Media Limited | Professional & scientific | 2024 |
| Wahtech Ltd | Information & communication | 2024 |
| Waideml Limited | Professional & scientific | 2021 |
| Wakb Immigration Services Ltd | Professional & scientific | 2025 |
| Wakeupcall Hospitality Limited | Professional & scientific | 2024 |
| Walden Landscaping Ltd | Administrative & support | 2026 |
| Walgrove Gardens Residents Management Company Limited | Households | 2015 |
| Wali Leisure and Retail Limited | Hospitality | 2018 |
| Walkertech Cars Limited | Wholesale & retail | 2014 |
| Wallington Property Group Ltd | Real estate | 2024 |
| Wallington Property Holdings Ltd | Real estate | 2024 |
| Wallis Family Properties Ltd | Real estate | 2022 |
| Walsh Landscaping Ltd | Administrative & support | 2021 |
| Waltham Chase RTM Company Ltd | Households | 2020 |
| Wander Construction Ltd | Construction | 2024 |
| Want Effects Limited | Information & communication | 2011 |
| Wanzami Entertainment Limited | Information & communication | 2024 |
| Wards Place Courtyard Freehold Limited | Households | 2009 |
| Warfield Plumbing & Heating Limited | Construction | 2005 |
| Warwest Limited | Agriculture & fishing | 1980 |
| WAT Innovations Limited | Professional & scientific | 2016 |
| Watch Your Head Ltd | Arts & recreation | 2015 |
| Waterfull Limited | Real estate | 2005 |
| Watergaw Ltd | Professional & scientific | 2015 |
| Waterside (Maidenhead) Residents Limited | Households | 1995 |
| Waterside Wealth Management Limited | Financial services | 2006 |
| Waterstone Design Limited | Professional & scientific | 2002 |
| Waterview Management Company Limited | Households | 2000 |
| Watfield Marine Safety Limited | Professional & scientific | 2025 |
| Watkins Car Sales Limited | Administrative & support | 2009 |
| Watson's Property Agents Ltd | Real estate | 2021 |
| Watt Money Limited | Financial services | 2013 |
| Wattba Racing Ltd | Arts & recreation | 2020 |
| WAY11 Ltd | Real estate | 2025 |
| Wayescot Limited | Professional & scientific | 2019 |
| Wbcap Limited | Professional & scientific | 2022 |
| WBK Limited | Wholesale & retail | 2005 |
| Wctd Limited | Administrative & support | 2011 |
| WE ARE Altitude Ltd | Professional & scientific | 2024 |
| WE Build Homes Limited | Construction | 2016 |
| WE Love Care Limited | Health & social care | 2017 |
| WE Nest Holdings Limited | Real estate | 2015 |
| WE Take Blood Ltd | Health & social care | 2022 |
| Wealleans Harding & Co. | | 1995 |
| Wear & Tear (Towels) UK Limited | Wholesale & retail | 2015 |
| Web Sales Limited | Wholesale & retail | 2016 |
| Webequator Limited | Information & communication | 2012 |
| Webmaster Studios Limited | Information & communication | 2022 |
| Wedgewood Food and Drink Solutions Ltd | Professional & scientific | 2018 |
| Welbecson Group Limited | Professional & scientific | 1947 |
| Weldtek Engineering Limited | Manufacturing | 2004 |
| Wellbeck Properties Limited | Real estate | 2020 |
| Wellfounded Ltd | Professional & scientific | 2016 |
| Wendover Road Freehold Limited | Households | 2023 |
| Wessex Fish & Grill Limited | Hospitality | 2026 |
| Wessex Fish and Kebab Limited | Hospitality | 2024 |
| Wessex Off-Licence Limited | Wholesale & retail | 2015 |
| West Borough Food & Wine Ltd | Wholesale & retail | 2020 |
| West London Combustion Limited | Construction | 2022 |
| West London Energy Recovery Holdings Ltd | Financial services | 2013 |
| West London Energy Recovery Ltd | Water & waste | 2013 |
| West London Print Limited | Manufacturing | 1985 |
| West London Readymix Concrete Ltd | Construction | 2018 |
| West Midlands Production Services Ltd | Arts & recreation | 2018 |
| West Oceans UK Ltd | Manufacturing | 2017 |
| West Spinal Limited | Health & social care | 2024 |
| Westacott Farming | Agriculture & fishing | 1976 |
| Westbrook Trading Limited | Real estate | 2021 |
| Westbrook Waste Limited | Professional & scientific | 2019 |
| Westcoign (Management) Company Limited | Hospitality | 1976 |
| WESTGATE24 Limited | Professional & scientific | 2023 |
| Westmead Residents Association Limited | Real estate | 1991 |
| Westminster Building Services Limited | Construction | 1985 |
| Westways Properties Ltd | Real estate | 2019 |
| Westwood Green Ltd | Administrative & support | 1956 |
| WET Nose & Happy Toes Ltd | Other services | 2018 |