| TJB Associates Limited | Construction | 2010 |
| Tltrades Ltd | Construction | 2026 |
| Tokzy Kitchen Limited | Hospitality | 2026 |
| Tonksta Ltd | Professional & scientific | 2023 |
| Top Class Cars Ltd | Transport & logistics | 2017 |
| Total Computer IT Services Limited | Information & communication | 2013 |
| Townsmead Residents Association Ltd | Households | 2014 |
| TR Plumbing Limited | Construction | 2015 |
| Trackingthis Limited | Information & communication | 2010 |
| Tracmaster Limited | Manufacturing | 1984 |
| Tractive Solutions Ltd | Administrative & support | 2018 |
| Trade This Sleep Ltd | Other services | 2023 |
| Transformational Journeys Ltd | Professional & scientific | 2025 |
| Transparency Cleaning Services Ltd | Administrative & support | 2019 |
| Travel Bits Limited | Administrative & support | 2021 |
| Travel Visa Worldwide Limited | Administrative & support | 2020 |
| Travelling Wire Limited | Manufacturing | 1979 |
| Traylen Writing Ltd | Professional & scientific | 2023 |
| Trelan Factors Limited | Wholesale & retail | 2014 |
| Triangle Road Residents Company Limited | Households | 1992 |
| Tricodent Limited | Wholesale & retail | 1982 |
| Trine Logistics Ltd | Transport & logistics | 2026 |
| Triple Nine Ltd | Information & communication | 2025 |
| Tripplevision Limited | Information & communication | 2013 |
| Trust My Trade Limited | Other services | 2017 |
| TSG Safety Solutions Limited | Professional & scientific | 2019 |
| Tsprofessional Audio Limited | Wholesale & retail | 1992 |
| TT PUB Group Limited | Hospitality | 2026 |
| Tuco Media Ltd | Professional & scientific | 2020 |
| Turbine Tools Limited | Manufacturing | 2005 |
| Turbo Sport Limited | Arts & recreation | 2025 |
| Turkish Master Chef Ltd | Hospitality | 2021 |
| Turner Plumbing & Heating (Sussex) Ltd | Construction | 2026 |
| Turnersland Court Limited | Hospitality | 1993 |
| Turrell Consulting Limited | Financial services | 2015 |
| Two Tone Scaffolding Ltd | Construction | 2015 |
| Tyrrell Developments Ltd | Construction | 2008 |
| UK Hub Construction Ltd | Construction | 2020 |
| Uksl Holdings Limited | Manufacturing | 2025 |
| UMG Rentals Ltd | Administrative & support | 2025 |
| Undisputed Performance Ltd | Arts & recreation | 2025 |
| Uni-Move Ltd | Construction | 2003 |
| Universal Aquaculture Limited | Agriculture & fishing | 2011 |
| University of Brighton Academies Trust | Education | 2010 |
| Unorthodox Methods Limited | Wholesale & retail | 2026 |
| Upper Station Gardens Limited | Households | 2020 |
| Urban Builders Southern Limited | Construction | 2008 |
| Urbanaest Ltd | Health & social care | 2023 |
| V M Property Sussex Limited | Real estate | 2022 |
| Vajram Solutions Limited | Information & communication | 2025 |
| Valebridge Development Limited | Information & communication | 2018 |
| Valleys Property Management Limited | Real estate | 2021 |
| Vantage Auto Ltd | Wholesale & retail | 2021 |
| Vasiot Design Limited | Construction | 2003 |
| Velasco Cosmetics Ltd | Wholesale & retail | 2021 |
| Velocity Project Services Limited | Construction | 2011 |
| Venn-Tures Limited | Real estate | 2024 |
| Ventana Medical Systems Limited | Manufacturing | 2005 |
| Verdant Jewellery Limited | Wholesale & retail | 2026 |
| Versed Global Ltd | Information & communication | 2025 |
| Vertex Softco Ltd | Information & communication | 2024 |
| Vestimenta Limited | Wholesale & retail | 2016 |
| VIC Place (Residents) Management Company Limited | Professional & scientific | 2014 |
| Victoria Milton Ltd | Professional & scientific | 2026 |
| Victus Esports Ltd | Information & communication | 2021 |
| Viking Event Services Limited | Professional & scientific | 2019 |
| Vikinglaw Limited | Professional & scientific | 2009 |
| Vinula Consulting Ltd | Information & communication | 2024 |
| Vinyl One Ltd | Manufacturing | 2018 |
| VIP Nail Club Ltd | Other services | 2022 |
| Viridine Oils Limited | Manufacturing | 2008 |
| Visa Australia Limited | Administrative & support | 2006 |
| Vista (Seaford) Management Company Limited | Households | 2006 |
| Vital Edge Support Care Ltd | Health & social care | 2025 |
| Voce Property Management Limited | Households | 2023 |
| Vogue Padel Ltd | Arts & recreation | 2026 |
| Vogue Shutters Ltd | Wholesale & retail | 2013 |
| VP Construction Ltd | Real estate | 2011 |
| VSJ Properties Limited | Real estate | 2023 |
| Waitoa Holdings Ltd | Real estate | 2020 |
| Wakehurst House Ltd | Financial services | 2022 |
| Walford Group Ltd | Wholesale & retail | 2026 |
| Walker & Watts Limited | Professional & scientific | 2014 |
| Wallis Logistics Limited | Transport & logistics | 2003 |
| Walnut Close (Burgess Hill) Management Company Limited | Households | 2018 |
| Warnham Court (Horsham) Management Company Limited | Households | 2000 |
| Warnham Court House Limited | Households | 2006 |
| Washsalon Ltd | Administrative & support | 2023 |
| WAT Facilities Ltd | Construction | 2024 |
| Waverley Ventures Ltd | Financial services | 2025 |
| Waving FOX Ltd | Professional & scientific | 2026 |
| WC Hire Limited | Administrative & support | 1998 |
| WE Smile Club Ltd | Other services | 2025 |
| Weald Power Ltd | Construction | 2025 |
| Wealth Management Experts Limited | Financial services | 2009 |
| Wealthme Ltd | Financial services | 2012 |
| Weaverpath Ltd | Wholesale & retail | 2025 |
| Webberz.Com Ltd. | Professional & scientific | 2021 |
| Webful Ltd | Extraterritorial | 2012 |
| Wellesley Associates LLP | | 2010 |