| THE Martin Sewell Building Company Ltd | Construction | 1991 |
| THE Meadows (Blackboys) Residents Management Company Limited | Households | 2025 |
| THE Midnight Slumber Club Ltd | Administrative & support | 2024 |
| THE Mill (Westhampnett) Management Company Limited | Households | 2000 |
| THE Natural Wreath Company Ltd | Arts & recreation | 2007 |
| THE Nest (PBB) Ltd | Health & social care | 2018 |
| THE Orangery Collection Limited | Administrative & support | 2016 |
| THE Pines (Birdham) Management Company Limited | Households | 2018 |
| THE Print Queen Ltd | Wholesale & retail | 2025 |
| THE Right to Work C.I.C. | Health & social care | 2014 |
| THE Rough Towel Company Limited | Wholesale & retail | 2025 |
| THE Sussex Snowdrop Trust | Health & social care | 2002 |
| THE Tannery Chichester (Freehold) Limited | Households | 2004 |
| THE Tannery Chichester Limited | Households | 2002 |
| Theatre Exchange Community Interest Company | Arts & recreation | 2020 |
| Thepatiolayers Ltd | Administrative & support | 2025 |
| Thermpro Ltd | Construction | 2019 |
| Third Impact Diving Expeditions Limited | Administrative & support | 2018 |
| Three Kids and a BUS Limited | Information & communication | 2023 |
| Thrive Equine Ltd | Agriculture & fishing | 2026 |
| Throwing Shapes Ltd | Wholesale & retail | 2020 |
| Tidy Garden Maintenance Ltd | Administrative & support | 2022 |
| Tilly Lock Art Ltd | Wholesale & retail | 2026 |
| TIN Machine Limited | Construction | 2026 |
| Titan Scaffold Services Limited | Construction | 2026 |
| Tjlb Consulting Ltd | Professional & scientific | 2024 |
| Tmay RTS Ltd | Education | 2025 |
| Topsolar Energy Limited | Construction | 2015 |
| Tortington Lane Management Limited | Households | 2018 |
| Tower House Arundel Freehold Limited | Households | 2025 |
| Train Trade Limited | Real estate | 1989 |
| Transit Empire Ltd | Wholesale & retail | 2023 |
| Trapsil Consulting Limited | Professional & scientific | 2023 |
| Treetec Consultancy Limited | Agriculture & fishing | 2010 |
| Trendyorwhat Ltd | Wholesale & retail | 2026 |
| Trescom Limited | Transport & logistics | 2002 |
| Tribal Scaffolding Ltd | Construction | 2024 |
| Tributes Limited | Wholesale & retail | 1999 |
| Tributes Property Limited | Real estate | 2019 |
| Trumpers Lane Residents Management Company Limited | Households | 2007 |
| TSH Sports Horses Limited | Agriculture & fishing | 2017 |
| Tsip Limited | Administrative & support | 2008 |
| TWENTY24 Developments Ltd | Construction | 2024 |
| TWH Propco Ltd | Hospitality | 2026 |
| TWL Services Ltd | Construction | 2026 |
| Tyrrell Electrical Services Ltd | Construction | 2007 |
| Usworth House Solar Farm Limited | Energy | 2022 |
| Utilise IT (UK) Ltd | Information & communication | 2009 |
| Valerie Robertson Properties Limited | Real estate | 2016 |
| Valiant Marine Developments Limited | Real estate | 2017 |
| Vandermac Limited | Financial services | 2020 |
| Ventura Management Limited | Households | 2007 |
| Vertex Holdings Limited | Extraterritorial | 1989 |
| Veterinary Independent Specialists Ltd | Professional & scientific | 2012 |
| Vethouse Limited | Professional & scientific | 2022 |
| Viridis Communications Ltd. | Information & communication | 2018 |
| Vitality Hemp Limited | Manufacturing | 2014 |
| Vsuk Limited | Professional & scientific | 2012 |
| Wallock Limited | Professional & scientific | 1996 |
| Walwyn Close Residents Limited | Households | 2004 |
| Warenna Limited | Information & communication | 2024 |
| Warner Plumbing & Heating Limited | Construction | 2006 |
| Warren Management (Chichester) Limited | Households | 1998 |
| Wasteman Skips Limited | Water & waste | 2023 |
| Water Charges Action Group Limited | Other services | 2017 |
| Waterford Gardens Management (2ND Phase) Limited | Households | 2002 |
| Waterford Gardens Management Limited | Households | 2001 |
| West Coast Gymnastics CIC | Health & social care | 2013 |
| West View Gardens Management Company Limited | Real estate | 2008 |
| Westbrook Properties Ltd | Real estate | 2024 |
| Westergate Mews Residents Association Limited | Households | 1995 |
| Westgate Gardens Limited | Households | 1986 |
| Westgate Lodge Limited | Households | 1989 |
| Weston Place Management Company Limited | Households | 1995 |
| Westons Gardens Ltd | Administrative & support | 2020 |
| Westons Group Limited | Construction | 2016 |
| WGH Forecourt Building Services Limited | Construction | 2006 |
| Wheaten Hill Bess Limited | Energy | 2022 |
| White Shark Ltd | Construction | 2025 |
| White Square Capital (2025) Limited | Wholesale & retail | 2013 |
| Wicks Farm Biomethane Ltd | Professional & scientific | 2018 |
| Willcox & King Engineering Limited | Manufacturing | 2010 |
| William Cawley Mews (1) Management Company Limited | Households | 2003 |
| William Cawley Mews (2) Management Company Limited | Households | 2003 |
| Winston Court Residents Association Limited | Households | 1985 |
| Wisboro House Limited | Professional & scientific | 2010 |
| Wisereach Business Solutions Ltd | Information & communication | 2005 |
| Woodhill Design Associates Limited | Professional & scientific | 2016 |
| Woodland Place Residents Association Limited | Households | 1987 |
| Woodlands Close Management Company Limited | Households | 2022 |
| Woodlands Lane Management Company Limited | Households | 2003 |
| Woodpecker Court Petworth Limited | Real estate | 2015 |
| Woolley Solar Farm Limited | Energy | 2023 |
| Worcestershire Film Office Ltd | Information & communication | 2023 |
| World Merchant Ltd. | Wholesale & retail | 2016 |
| Wyndham (Midhurst) Management Limited | Households | 2019 |
| Wyshbone Sales Limited | Information & communication | 2020 |
| Zeebo Digital Ltd | Information & communication | 2024 |
| Zenstar Holdings Limited | Financial services | 2025 |
| ZJP Construction Ltd | Construction | 2022 |