| Trade Cars & Commercials South Ltd | Wholesale & retail | 2024 |
| Trade W1NDS Ltd | Wholesale & retail | 2022 |
| Trailhawk Horizons Limited | Information & communication | 2014 |
| Trainer Bubble Ltd. | Professional & scientific | 2006 |
| Transform Construction Services Ltd | Construction | 2024 |
| Transition Hydrogen Limited | Professional & scientific | 2024 |
| Translucent Community CIC | Information & communication | 2022 |
| Traverse Community Ltd | Information & communication | 2026 |
| Treassom (UK) Limited | Public administration | 2023 |
| Trevone House Management Company Limited | Extraterritorial | 2005 |
| Trevor Beech Ltd | Health & social care | 2017 |
| Triacetech Limited | Wholesale & retail | 2024 |
| Trinity Commercial Management Ltd | Other services | 2023 |
| Triple D Store Ltd | Wholesale & retail | 2025 |
| Triple Global Limited | Hospitality | 2023 |
| True Partnership Limited | Professional & scientific | 2021 |
| Truman Wood Ltd | Professional & scientific | 2026 |
| Trustee and Estate Protection Services Ltd | Professional & scientific | 2023 |
| TS Safepay Limited | Information & communication | 2018 |
| Tsukiji Ltd | Hospitality | 2025 |
| TTC Marine Limited | Information & communication | 2021 |
| Tucker and Vine Ltd | Other services | 2026 |
| Tunimize Automotive Ltd | Wholesale & retail | 2023 |
| Tunston Ltd | Wholesale & retail | 2025 |
| Turnmill Digital Limited | Professional & scientific | 2025 |
| TW Assets Ltd | Construction | 2009 |
| Tweakers South Ltd | Households | 2020 |
| Twelve ST. Andrew's Road Limited | Households | 1997 |
| Twelve Waverley Grove Management Company Limited | Households | 2003 |
| Twentywest Limited | Real estate | 2015 |
| Twisted Events Presents Limited | Arts & recreation | 2011 |
| TWJ Developments Limited | Real estate | 2008 |
| Two Colouring and Hair Design Studio Limited | Other services | 2016 |
| Twofold Creative Limited | Professional & scientific | 2026 |
| U Build Consultants Ltd | Construction | 2006 |
| Uberdev Limited | Information & communication | 2011 |
| UFO Burgers and Grill Limited | Hospitality | 2025 |
| UK Field GUN Academy CIC | Education | 2025 |
| UK Renewable Grants Limited | Construction | 2025 |
| UKG Lifestyle Limited | Health & social care | 2007 |
| Ulaunch Ltd | Information & communication | 2025 |
| Ultimate Facilties Managment Limited | Administrative & support | 2012 |
| Unbreakable Ventures Ltd | Hospitality | 2025 |
| Underground Power Cables Ltd | Construction | 2024 |
| Unionpulse Ltd | Wholesale & retail | 2025 |
| United Car Exchange Ltd | Wholesale & retail | 2026 |
| Unmade Radio Ltd | Information & communication | 2020 |
| Unscripted Property Ltd | Education | 2026 |
| Upix Media Ltd | Information & communication | 2022 |
| Urban Chic Stays Ltd | Real estate | 2019 |
| Urban Coast Homes Ltd | Real estate | 2022 |
| Urban Flavours Ltd | Hospitality | 2016 |
| Utility Connection Experts Ltd | Construction | 2025 |
| Vail Asset Management Limited | Real estate | 2016 |
| Valecrest Systems Limited | Information & communication | 2025 |
| Valemex Limited | Hospitality | 2012 |
| Valhalla 33 Ltd | Transport & logistics | 2017 |
| Valinor Property Ltd | Real estate | 2025 |
| Valna Limited | Transport & logistics | 1987 |
| Valoriancapital Limited | Financial services | 2026 |
| Valsan Logtrans Ltd | Transport & logistics | 2025 |
| Vancouver House Management (1995) Limited | Hospitality | 1995 |
| Vanenails Studio Limited | Other services | 2025 |
| Vanguard Court (Eastney) Limited | Households | 1999 |
| Vanturo Ltd | Information & communication | 2025 |
| Variotech Marine Engineering Ltd | Professional & scientific | 2025 |
| Vault 108 Ltd | Real estate | 2014 |
| Vaulted Wins Ltd | Arts & recreation | 2025 |
| Vaynr Enterprises Limited | Wholesale & retail | 2026 |
| Vbsential Ltd | Professional & scientific | 2025 |
| Veancraft Properties Ltd | Real estate | 2015 |
| Velden Developments Limited | Real estate | 1959 |
| Velden Properties (Portsmouth) Limited | Real estate | 1960 |
| Vella Property Solutions Limited | Real estate | 2019 |
| Velopy Ltd | Wholesale & retail | 2011 |
| Verison Group Limited | Wholesale & retail | 2025 |
| Vertex Civils Limited | Construction | 2018 |
| Verwer Services Ltd | Professional & scientific | 2016 |
| VFM Scooter Events Ltd | Administrative & support | 2021 |
| Victoria Road North Limited | Real estate | 2022 |
| Victory Electrical Services Ltd | Construction | 2023 |
| Victory Marketing Group Limited | Professional & scientific | 2022 |
| Video Inventory Agency (Portsmouth) Ltd | Professional & scientific | 2015 |
| Vietnam Maritime Supply & Trading Co Ltd | Administrative & support | 2024 |
| Violab Cosmetics Ltd | Wholesale & retail | 2025 |
| Viraj Media Limited | Professional & scientific | 2015 |
| Virtuous Group Ltd | Construction | 2019 |
| Visben Limited | Health & social care | 2016 |
| Visben Resourcing Limited | Health & social care | 2021 |
| Vitamin Sea Clothing Ltd | Wholesale & retail | 2023 |
| Vizob Limited | Information & communication | 2015 |
| Volgary Ltd | Real estate | 2018 |
| Voltdrop Ltd. | Construction | 2017 |
| Voltic Electrical Services Ltd | Construction | 2021 |
| Voltron Group Ltd | Professional & scientific | 2026 |
| Vrmg Security Services Limited | Administrative & support | 2011 |
| VS Group Ltd | Construction | 2020 |
| Vtc-Mg Consulting Ltd | Administrative & support | 2023 |
| VXO Vehicle Crossings & Property Services Ltd | Other services | 2017 |
| Vyomir Limited | Construction | 2021 |