| Traksure Limited | Other services | 2007 |
| Tree Wolf Ltd | Professional & scientific | 2017 |
| Triac Electrical Ltd | Construction | 2018 |
| Tribe Rugby CIC | Education | 2023 |
| Trillium Montessori House Ltd | Education | 2017 |
| Tristsasa Ltd | Transport & logistics | 2023 |
| Trisynaptic Limited | Manufacturing | 2025 |
| Triton Plumbing Solutions Ltd | Construction | 2023 |
| True Property Maintenance Limited | Construction | 2019 |
| True YOU Today CIC | Education | 2017 |
| TS Homes South Ltd | Real estate | 2025 |
| Tshan Trade Ltd | Wholesale & retail | 2020 |
| Tudor House Financial Partners Ltd | Financial services | 2018 |
| Tudor Stride Recruitment Ltd | Administrative & support | 2023 |
| Tufflex Limited | Professional & scientific | 1951 |
| Tuffstrut Limited | Wholesale & retail | 1992 |
| Tuki Trend Ltd | Wholesale & retail | 2025 |
| Tuluma Limited | Wholesale & retail | 2023 |
| Tunnelling Accessories Limited | Wholesale & retail | 1987 |
| Turtle Bay Paddleboards Ltd | Wholesale & retail | 2017 |
| Twcaferacers Limited | Wholesale & retail | 2021 |
| Twelvethirtyfour Limited | Professional & scientific | 2023 |
| Twenty Three Associates Limited | Information & communication | 2021 |
| Two Buckingham Road Leaseholders RTM Company Limited | Households | 2019 |
| U-Steel Investment Ltd | Professional & scientific | 2026 |
| Ubando Limited | Information & communication | 2024 |
| Udimore Property Limited | Construction | 2025 |
| Uknight World Ltd | Wholesale & retail | 2026 |
| Under the Sails Ltd. | Extraterritorial | 2005 |
| Under the Sun Limited | Extraterritorial | 1999 |
| Under the Sun Travel Ltd. | Extraterritorial | 2005 |
| Unica Natural Limited | Administrative & support | 2012 |
| Uniform Jewellery Ltd | Wholesale & retail | 2023 |
| Uniqx Ltd | Wholesale & retail | 2023 |
| United in Separation Ltd | Health & social care | 2025 |
| Universal Harmony Limited | Professional & scientific | 2015 |
| Untamed Stories Ltd | Education | 2021 |
| Unveiled Ltd | Real estate | 2019 |
| Upper Maze Hill Maintenance Company Ltd | Households | 2017 |
| Urban Spaceman Limited | Wholesale & retail | 2005 |
| Ussa Candles Limited | Manufacturing | 2025 |
| UZY Haulage Group Limited | Transport & logistics | 2024 |
| V&T Transport and Logistics Limited | Transport & logistics | 2018 |
| Vacuum Windows Limited | Manufacturing | 2002 |
| Vasileios Medics Ltd | Health & social care | 2012 |
| Vauxhall TEC Limited | Wholesale & retail | 2012 |
| VCG Consultants Ltd | Professional & scientific | 2014 |
| Vehicle Independent Parts (Hastings) Limited | Wholesale & retail | 1998 |
| Vehicle Smart Ltd | Information & communication | 2016 |
| Verisafe Consultancy Ltd | Professional & scientific | 2026 |
| Veronica Moss Referral Development Limited | Administrative & support | 2007 |
| Vertex Angling Ltd | Wholesale & retail | 2026 |
| Veterina Limited | Professional & scientific | 2024 |
| VG Conseil Limited | Professional & scientific | 2004 |
| Vi's FAF Ltd | Health & social care | 2020 |
| Victoria Heights Limited | Real estate | 2020 |
| Video Game Superstars Ltd | Manufacturing | 2025 |
| Vigilar for Chefs Ltd | Professional & scientific | 2025 |
| Vigor Advisors Ltd | Financial services | 2025 |
| Villa Rosa Limited | Professional & scientific | 2005 |
| Viv's Bargain Ltd | Wholesale & retail | 2019 |
| Vivea Express Limited | Wholesale & retail | 2026 |
| Vividcheck Ltd | Information & communication | 2025 |
| W H P Limited | Construction | 2007 |
| Wadey Will Writing Ltd | Professional & scientific | 2026 |
| Wahk Rahk Ltd | Wholesale & retail | 2019 |
| Waltstone Tree Care Limited | Administrative & support | 2023 |
| Warren Telecommunications Limited | Information & communication | 2021 |
| Wateringbury Way Communal Area Ltd | Households | 2021 |
| Watermill 2015 Limited | Manufacturing | 1981 |
| Wayne Perry Limited | Other services | 2016 |
| Wayward Kite Ltd | Information & communication | 2026 |
| Wayward Studio Ltd | Professional & scientific | 2023 |
| Weber Tax & Trust Limited | Administrative & support | 2022 |
| Welat Ltd | Hospitality | 2024 |
| Wellington SIX RTM Company Limited | Households | 2019 |
| Wendykalay Ltd | Hospitality | 2022 |
| Werner Mayerhofer Investments Ltd | Administrative & support | 2007 |
| Westfield Football Club Sussex Limited | Arts & recreation | 2022 |
| Wheatley Moves and Cleans Ltd | Transport & logistics | 2025 |
| Wheels of Steel Holdings Ltd | Wholesale & retail | 2023 |
| Whirligig Retail Solutions Limited | Construction | 2009 |
| White Lodge Management (Eastbourne) Company Limited | Professional & scientific | 1990 |
| Whites Electrical Services Ltd | Construction | 2026 |
| WHR Freehold Ltd | Real estate | 2017 |
| Wildflower Honey Ltd | Agriculture & fishing | 2025 |
| Wildflower Media Ltd | Administrative & support | 2022 |
| Wilds Rents Management Company Limited | Households | 2018 |
| Will Clarke Ltd | Construction | 2019 |
| Willow Care Homes Ltd | Health & social care | 2022 |
| Willow Leaf Piercing Limited | Other services | 2024 |
| Wilma Court Residents Company Limited | Households | 1989 |
| Wilson Crown Capital Ltd | Financial services | 2025 |
| Wilson Stereo Library Limited(The) | Wholesale & retail | 1962 |
| Wilsons Landscaping Sussex Limited | Administrative & support | 2026 |
| Wilting Hire Ltd | Construction | 2025 |
| Wilton Road Properties Limited | Households | 2019 |
| Windmill Fast Foods Limited | Hospitality | 2001 |
| Window and Door Experts Limited | Professional & scientific | 2024 |
| Wined & Dined (South East) Limited | Hospitality | 2018 |