| THE Brighton Deco Building RTM Company Limited | Households | 2013 |
| THE Burning Desire Hot Sauce Company Limited | Manufacturing | 2020 |
| THE Coinsmith Limited | Professional & scientific | 2018 |
| THE Digital Bench Ltd | Professional & scientific | 2020 |
| THE Downland Construction Company Ltd | Construction | 2023 |
| THE Electrical Company (Brighton) Limited | Construction | 2019 |
| THE Fizzy Rascal Limited | Wholesale & retail | 2026 |
| THE Flamingo Clinic Ltd | Health & social care | 2018 |
| THE Full Works Building Company Limited | Construction | 2019 |
| THE Graze Escape Ltd | Hospitality | 2026 |
| THE Growth LAB Holdings Limited | Financial services | 2023 |
| THE Hair Clinic Limited | Health & social care | 1994 |
| THE Hair Clinic Products Limited | Wholesale & retail | 2005 |
| THE Health Shack Shoreham Ltd | Hospitality | 2019 |
| THE Healthy Company Limited | Health & social care | 2016 |
| THE Hope Hive Ltd | Health & social care | 2020 |
| THE Hospitality Assessment Company Limited | Professional & scientific | 2014 |
| THE Hove Construction Company (Sussex) Ltd | Construction | 2011 |
| THE Little Play Village Ltd | Health & social care | 2020 |
| THE Maintenance GUY (Brighton) Ltd | Other services | 2023 |
| THE Mendham Guildhawk Song Company Ltd | Professional & scientific | 2020 |
| THE New Shoreham Church Trust | Education | 2020 |
| THE Nicoll Group Ltd | Professional & scientific | 2023 |
| THE Opportunity Provider Ltd | Education | 2006 |
| THE Packster Ltd | Wholesale & retail | 2024 |
| THE Pelvic Pain Clinic Ltd | Health & social care | 2024 |
| THE Prescription Training Company Limited | Health & social care | 2008 |
| THE Real Flying Company Ltd | Arts & recreation | 2002 |
| THE Retreat (Eastbourne) Ltd | Other services | 2021 |
| THE Right Leap Ltd | Information & communication | 2021 |
| THE Ropetackle Centre Trust | Arts & recreation | 2004 |
| THE Safety People Ltd | Administrative & support | 2019 |
| THE Scanning Room Ltd. | Health & social care | 2014 |
| THE Spotted Dog Store Ltd | Wholesale & retail | 2025 |
| THE Squared Box Ltd | Real estate | 2025 |
| THE Tape Agency Limited | Professional & scientific | 2016 |
| THE Tape Dispenser Creator Services Limited | Professional & scientific | 2025 |
| THE UK Car of the Year Awards Ltd | Extraterritorial | 2013 |
| THE Van Alen Freehold Limited | Real estate | 2004 |
| THE Vintage CUT Ltd | Wholesale & retail | 2019 |
| THE Whale Car Wash Limited | Administrative & support | 2009 |
| Thecrystalcaveuk Ltd | Wholesale & retail | 2021 |
| Thepadclothing Ltd | Wholesale & retail | 2019 |
| Thepeergroup Ltd | Administrative & support | 2016 |
| Thermacoustic Limited | Construction | 2012 |
| Thirty-One Brunswick Terrace Limited | Households | 2002 |
| Thomson Plumbing and Heating Limited | Construction | 2011 |
| Three & Four Adelaide Mansions Limited | Households | 2000 |
| Threedeltatools Limited | Professional & scientific | 2022 |
| Thrivebiomedica Limited | Health & social care | 2019 |
| Tidey Limited | Professional & scientific | 2022 |
| Tigerstripe Music Ltd | Arts & recreation | 2019 |
| Tiny Room Limited | Information & communication | 2026 |
| Tiryaki Taxi Ltd | Transport & logistics | 2025 |
| TL Burtenshaw Upholstery Limited | Other services | 2016 |
| TLA Investments Ltd | Extraterritorial | 2022 |
| TLS Defence Limited | Construction | 2019 |
| Top 2 Bottom Cleaning (Brighton) Ltd | Administrative & support | 2026 |
| Topline Media Ltd | Professional & scientific | 2008 |
| Tordy Creates and Designs Ltd | Wholesale & retail | 2026 |
| Tosca Food Ltd | Administrative & support | 2018 |
| Tosca Pizzeria Ltd | Hospitality | 2014 |
| Tothill Consulting Ltd | Professional & scientific | 2019 |
| Toucan Code Ltd | Information & communication | 2021 |
| Touch Bidco Limited | Financial services | 2024 |
| Town Quay Apartments Shoreham Limited | Households | 2014 |
| Tozzi Limited | Extraterritorial | 2012 |
| Traditional Leadwork Ltd | Construction | 2021 |
| Transform Personal Training Limited | Arts & recreation | 2007 |
| Transition Removals Limited | Transport & logistics | 2021 |
| True Blue Luxury Toilets Ltd | Administrative & support | 2025 |
| TRUFORM3D Limited | Manufacturing | 2025 |
| Truwicker Limited | Real estate | 2012 |
| Tweak Boutique Ltd | Extraterritorial | 2021 |
| Twenty Montpelier Place Residents Limited | Households | 2007 |
| Twenty Thousand Leagues Ltd | Professional & scientific | 2016 |
| Two Greens Ltd | Professional & scientific | 2023 |
| Two Peas in a POD Limited | Information & communication | 2013 |
| TY Electrical Ltd | Construction | 2018 |
| Uberfit Training Limited | Arts & recreation | 2009 |
| UK City Trees Ltd | Administrative & support | 2024 |
| UNC Consultants Limited | Information & communication | 2020 |
| Unique Copy Limited | Professional & scientific | 2017 |
| Unique Uncut Ltd | Information & communication | 2019 |
| United Search Consultants Ltd | Administrative & support | 2023 |
| Unity Building Supplies Limited | Wholesale & retail | 2020 |
| Unopenedmale Ltd | Wholesale & retail | 2020 |
| UP and Over Refurbs Ltd | Construction | 2023 |
| UP and Over Roofing & Building Services Limited | Construction | 2016 |
| UP on the Roof Ltd | Construction | 2024 |
| Upper Drive Management Company Limited | Households | 2007 |
| Upsilon Global Ltd | Administrative & support | 2016 |
| Urban Jungle Limited | Construction | 2000 |
| Uridge Properties Limited | Real estate | 2020 |
| V. & S. (NO. 3) Limited | Households | 1987 |
| Valiant Heraldics Limited | Wholesale & retail | 1981 |
| VCF Power Pads Limited | Professional & scientific | 2023 |
| Velosity Solutions Ltd | Professional & scientific | 2023 |
| Venture Precision Engineering Limited | Professional & scientific | 2006 |
| Vequity Capital Group Ltd | Financial services | 2026 |