| Tyre & Exhausts Limited | Wholesale & retail | 2002 |
| UK UPS Limited | Manufacturing | 2014 |
| UP Service London Limited | Health & social care | 2025 |
| Urban Community Projects Limited | Administrative & support | 2013 |
| Urban Vehicles Limited | Wholesale & retail | 2025 |
| USK Automotive Ltd | Wholesale & retail | 2021 |
| V-Bandz Limited | Wholesale & retail | 1998 |
| Val's Vending Ltd | Wholesale & retail | 2019 |
| Valentin Haulage Limited | Wholesale & retail | 2024 |
| Vampire Outdoor Gear Limited | Wholesale & retail | 2024 |
| Vanguard Building Services Limited | Construction | 2017 |
| Vark Properties Limited | Real estate | 2022 |
| VD Team Ltd | Administrative & support | 2018 |
| Venn Consulting Services Ltd | Professional & scientific | 2026 |
| Verdant Lawn Care Ltd | Administrative & support | 2025 |
| Verto Group Limited | Information & communication | 2016 |
| Victorian AGE Joinery Ltd | Manufacturing | 2014 |
| Viking Fitness PT Ltd | Arts & recreation | 2022 |
| Viking Services and Repairs Limited | Households | 2025 |
| Villager Publications Limited | Information & communication | 2006 |
| Vine Technical Services Limited | Professional & scientific | 2016 |
| Vintage Engine Technology Limited | Manufacturing | 1991 |
| Vintiko Limited | Wholesale & retail | 2019 |
| Vistara Point Limited | Real estate | 2026 |
| Visual Content Creations Ltd | Information & communication | 2025 |
| Vivid Vault Studios Ltd | Information & communication | 2025 |
| Viyash Ltd | Wholesale & retail | 2019 |
| Vizibble Publishing Ltd | Information & communication | 2015 |
| Vulture Culture Limited | Information & communication | 2006 |
| Waller Planning Limited | Professional & scientific | 2015 |
| Waresley Farms Limited | Agriculture & fishing | 1985 |
| Waresley Park Estate Limited | Other services | 2021 |
| Waresley Park Garden Centre Limited | Wholesale & retail | 2000 |
| Washxpress Limited | Other services | 2013 |
| Wayfinder Consultancy Limited | Administrative & support | 2025 |
| WE ARE the Business Maestros Ltd | Wholesale & retail | 2022 |
| WE ARE the Property Maestros Ltd | Real estate | 2022 |
| WE ARE Tudor Limited | Professional & scientific | 2014 |
| Weeks & Davey Installations Ltd | Wholesale & retail | 2015 |
| Welding & Auto Engineering Limited | Wholesale & retail | 1998 |
| Welwyn Indian Limited | Hospitality | 2018 |
| West Hazells Ltd | Households | 2002 |
| West London Property Solutions Limited | Real estate | 2013 |
| Westbury Production Services Ltd | Arts & recreation | 2025 |
| Westco Portfolio Management Ltd | Information & communication | 2022 |
| Westferry Consultants Ltd | Information & communication | 2015 |
| Westgate Farm Limited | Agriculture & fishing | 2018 |
| Westhead Eastern Region Limited | Financial services | 2013 |
| Wheatsheaf Tempsford Limited | Hospitality | 2024 |
| Whinro Consulting Ltd | Professional & scientific | 2019 |
| Whinro Limited | Construction | 2001 |
| Wild Minds Outdoors Ltd | Education | 2026 |
| Willow Leisure Limited | Education | 2018 |
| Windmill Autos Limited | Wholesale & retail | 2013 |
| Windy Brothers Films Limited | Information & communication | 2017 |
| Winsome Post Limited | Information & communication | 2019 |
| Wood Farm Freerange Eggs Limited | Agriculture & fishing | 2007 |
| Woodcraft Group Ltd. | Agriculture & fishing | 2019 |
| Worboys Garage Limited | Wholesale & retail | 1961 |
| World Air Carnival Limited | Arts & recreation | 2013 |
| World Race Circuits Ltd | Wholesale & retail | 2020 |
| Woven Forge Ltd | Wholesale & retail | 2024 |
| Wright Home Investments Ltd | Real estate | 2025 |
| Xertilox Ltd | Administrative & support | 2023 |
| YAK UK Limited | Administrative & support | 1994 |
| Yoga Bellies Biggleswade, Hitchin, Melbourn and Surrounding Areas Limited | Administrative & support | 2017 |
| Yoink Ltd | Other services | 2010 |
| York House (Meat Products) Limited | Manufacturing | 1970 |
| YOU ARE in Good Hands Ltd | Administrative & support | 2023 |
| YU4RIK Enterprise Limited | Manufacturing | 2023 |
| Yureka Moments Ltd | Other services | 2020 |
| Zado Property Holdings Limited | Real estate | 2025 |
| ZEN Creative Limited | Professional & scientific | 2005 |
| Zipper Films Limited | Information & communication | 2006 |
| ZOE Hunt Media Ltd | Information & communication | 2025 |
| Zynloom Ltd | Wholesale & retail | 2025 |