| Tules Global Limited | Information & communication | 2025 |
| Turner Design & Development Limited | Construction | 2026 |
| Twiggle Wellness Limited | Wholesale & retail | 2025 |
| Twohatscoaching Limited | Education | 2015 |
| Twotw Experience Ltd | Arts & recreation | 2026 |
| Twotw Immersive Limited | Manufacturing | 2018 |
| Typeminster Limited | Real estate | 1987 |
| U.K. International Nursing Agency Ltd. | Health & social care | 1997 |
| UK London Airport Transfer Limited | Transport & logistics | 2024 |
| Ultratravel Limited | Administrative & support | 2002 |
| Unegs Limited | Administrative & support | 2006 |
| Unicorn Organisation Limited(The) | Arts & recreation | 1982 |
| Union Plus Limited | Professional & scientific | 2010 |
| Unique Caring Limited | Health & social care | 2017 |
| Ureka Investments Limited | Real estate | 1960 |
| V S Services London Ltd | Transport & logistics | 2025 |
| VA Pensiero D'Italia Limited | Hospitality | 2002 |
| VA Pensiero Ltd | Hospitality | 2026 |
| Valley Corp Limited | Water & waste | 2021 |
| Vams Group Ltd | Other services | 2020 |
| Vanguard Holiday Home Management Limited | Real estate | 2015 |
| Vanguard Investment Management Limited | Financial services | 2014 |
| Vanguard Property Management Limited | Real estate | 2013 |
| Vanilla Trading Ltd | Other services | 2020 |
| Vatila Group Ltd | Wholesale & retail | 2020 |
| Vehicle Leasing Solutions Limited | Administrative & support | 2010 |
| Vence Building Ltd | Construction | 2015 |
| Venoire Ltd | Wholesale & retail | 2021 |
| Verixus Labs Ltd | Professional & scientific | 2023 |
| Versify Consulting Limited | Administrative & support | 2021 |
| VF Investiment Limited | Financial services | 2022 |
| Victory Joel & Co Limited | Wholesale & retail | 2025 |
| Viewpoint Consulting Ltd | Information & communication | 2023 |
| Vinavon Ltd | Wholesale & retail | 2025 |
| Vintgar Limited | Professional & scientific | 2006 |
| VIP Helps Ltd | Transport & logistics | 2025 |
| Virginia Advisory Limited | Professional & scientific | 2026 |
| Vironium Oral Healthcare Limited | Manufacturing | 2020 |
| Visban Networks Limited | Professional & scientific | 2020 |
| Visually Thinking Ltd | Professional & scientific | 2025 |
| Vitta Advisory Estate Planning Limited | Administrative & support | 2022 |
| Vitta Advisory Limited | Professional & scientific | 2021 |
| Vitta Advisory Trustees Limited | Financial services | 2022 |
| Vitta Capital Investments Ltd | Administrative & support | 2017 |
| Vitta Gemini Limited | Financial services | 2026 |
| Vitta Holdings Limited | Financial services | 1980 |
| Vivid Worldwide Ltd | Information & communication | 2023 |
| VMD Appliance Service Ltd | Other services | 2021 |
| Vmonitoring Systems Limited | Extraterritorial | 2013 |
| Vogel Group Ltd | Wholesale & retail | 2025 |
| Voleks Limited | Extraterritorial | 2015 |
| Voltapull Ltd | Construction | 2026 |
| Vsteam Limited | Extraterritorial | 2013 |
| VTW Investments Limited | Real estate | 2019 |
| W Property Solutions Ltd | Real estate | 2018 |
| W Simmonds Ltd | Professional & scientific | 2024 |
| W.Janet Limited | Extraterritorial | 1954 |
| Wachoch Holdings Limited | Real estate | 2022 |
| Wako Prop Holding Limited | Construction | 2024 |
| Walford Painting & Decorating Ltd | Construction | 2007 |
| Wallis Marketing Ltd. | Professional & scientific | 1993 |
| Walnut Tree Estates Limited | Extraterritorial | 2013 |
| Waltham Grain Yard Ltd | Construction | 2021 |
| Waste Concern Limited | Water & waste | 2006 |
| Wastecare Solutions and Resources Management Limited | Professional & scientific | 2026 |
| Wastex Solutions Ltd | Water & waste | 2026 |
| Water Incorporated | Other services | 2006 |
| Watermark Deck Limited | Financial services | 2021 |
| Watling Advisory Limited | Professional & scientific | 2025 |
| Watling Tutors Limited | Education | 2020 |
| Webtel Systems Limited | Manufacturing | 1999 |
| Wellington House (Freehold) Limited | Extraterritorial | 1996 |
| Wellington Street Investment Properties LLP | | 2018 |
| West 9 Flooring & Interior Ltd | Construction | 2026 |
| West Midlands Propco Ltd | Real estate | 2025 |
| West Warren Residents Association Limited | Other services | 2007 |
| Westburn Place (Management) Limited | Real estate | 2001 |
| Westman Solutions Ltd | Information & communication | 2024 |
| Wexham Affordable & Key Worker Homes Limited | Construction | 2020 |
| Wexham Park Golf and Leisure Centre Limited | Arts & recreation | 1934 |
| Whitbread Decorators Limited | Construction | 2008 |
| White Ellerton Plastics Limited | Manufacturing | 2020 |
| White Telecoms Limited | Wholesale & retail | 2010 |
| Whitegate Computing Limited | Information & communication | 1990 |
| Whitegate Minerva Limited | Information & communication | 2007 |
| Whordley Enterprises Limited | Information & communication | 2024 |
| Wigwellnook Limited | Other services | 2019 |
| Wilera Ltd. | Health & social care | 2015 |
| Willesden Squared Limited | Real estate | 2017 |
| William Ivor Stone Limited | Administrative & support | 2002 |
| Willow Health Limited | Health & social care | 2002 |
| Wilson Fink Limited | Wholesale & retail | 2019 |
| Wilson Westfield Limited | Professional & scientific | 2011 |
| WIN With ESG Ltd | Professional & scientific | 2023 |
| Wingfield Fruits Ltd | Hospitality | 2020 |
| Winscombe EYE Clinic Limited | Wholesale & retail | 2012 |
| Wisdomcraft Ltd | Health & social care | 2023 |
| Wise Accounting Services Ltd | Professional & scientific | 2024 |
| Wiser Media Ltd | Manufacturing | 2024 |
| Woga Ltd | Other services | 2024 |