| THE 24 Charles Road Right to Manage Company Limited | Households | 2007 |
| THE Association of British Philatelic Societies Limited | Other services | 1997 |
| THE Bathroom Studio South East Limited | Wholesale & retail | 2015 |
| THE Believe and Achieve Academy Ltd | Health & social care | 2021 |
| THE Bexhill Caring Community | Other services | 2004 |
| THE Big Green Dragon Limited | Real estate | 2010 |
| THE Big Picture International Ltd | Administrative & support | 2018 |
| THE Brand Crucible Group Limited | Professional & scientific | 2009 |
| THE Brand Crucible Network Limited | Professional & scientific | 2009 |
| THE Briers (John Fitt) Limited | Households | 1998 |
| THE Bulai's Ventures Ltd | Health & social care | 2021 |
| THE Campbell Napier Practice Limited | Real estate | 2019 |
| THE Central London Real Property Company Limited | Real estate | 2021 |
| THE Chocolate Software Company Limited | Information & communication | 1996 |
| THE Cleaning Hub Window Cleaning Supplies and Services Limited | Administrative & support | 2021 |
| THE Collectors Vault Hobby Company Ltd | Wholesale & retail | 2026 |
| THE Cooden Beach Hotel Limited | Hospitality | 2005 |
| THE Cove in Fairlight Limited | Hospitality | 2022 |
| THE COX Group Limited | Manufacturing | 2020 |
| THE Ebike Shop Limited | Wholesale & retail | 2023 |
| THE Fundraisers & the Arts Fundraisers CIC | Education | 2025 |
| THE Gaby Hardwicke Foundation | Other services | 2012 |
| THE Glam Van Ltd | Arts & recreation | 2024 |
| THE Good Story Initiative CIC | Health & social care | 2023 |
| THE Grind House Skateshop Ltd | Wholesale & retail | 2026 |
| THE Ground Rent Investment Corporation Limited | Construction | 1988 |
| THE Grumpy Vegan Limited | Extraterritorial | 2007 |
| THE Hastings Book Festival CIC | Arts & recreation | 2022 |
| THE Heartbeat Cafe Ltd | Manufacturing | 2026 |
| THE Heathfield Screenprinting Company Limited | Manufacturing | 1995 |
| THE Independent Collective Limited | Other services | 2021 |
| THE Institute of Residential Property Management Limited | Other services | 2007 |
| THE International CML Foundation | Health & social care | 2009 |
| THE Italian Factory Limited | Hospitality | 2019 |
| THE Jomuna Bexhill on Sea Limited | Hospitality | 2018 |
| THE Local Payroll Company Limited | Administrative & support | 2010 |
| THE Lock Centre South Limited | Construction | 2015 |
| THE London Loudspeaker Company Ltd | Manufacturing | 2015 |
| THE Lounge Bexhill Ltd | Hospitality | 2022 |
| THE Lounge Properties Limited | Real estate | 2024 |
| THE Maples Residents Company (Bexhill) Limited | Households | 1994 |
| THE Marlowes Residents Company Limited | Households | 2000 |
| THE Nail Fairy Ltd | Other services | 2024 |
| THE Old Post Office C.I.C. | Education | 2023 |
| THE Old Windmill Management Company (Gunters Lane) Limited | Households | 1994 |
| THE Oldham Estate Company Limited | Real estate | 2020 |
| THE Pelham Building Enterprises Limited | Construction | 2022 |
| THE Property Institute | Other services | 2021 |
| THE Purple Pear Sussex Ltd | Hospitality | 2025 |
| THE QA Hastings RTM Company Limited | Households | 2024 |
| THE Reformer Retreat Co. Limited | Other services | 2024 |
| THE Ripple Club Limited | Real estate | 2020 |
| THE Riznorr Co. Ltd | Wholesale & retail | 2025 |
| THE Secil Trust | Professional & scientific | 2004 |
| THE South Devon Holiday Parks Limited | Hospitality | 1996 |
| THE Sovereign Lighthouse Cafe Limited | Hospitality | 2010 |
| THE Starlings Group Ltd | Wholesale & retail | 2013 |
| THE Sussex Chimney Sweep Limited | Other services | 2023 |
| THE Sweet Shoppe Ltd | Wholesale & retail | 2026 |
| THE Toy Shack Ltd | Wholesale & retail | 2022 |
| THE Wiltons Freehold Company Ltd | Households | 2024 |
| THE Wobbly Cake Co. Ltd | Hospitality | 2025 |
| THE Women's Sports Union Limited | Arts & recreation | 2025 |
| Theatre ZOO Limited | Extraterritorial | 2000 |
| Theburgerbrothersuk Ltd | Hospitality | 2025 |
| Theeram Limited | Hospitality | 2023 |
| Thirty Seven Amherst Road Limited | Professional & scientific | 1997 |
| This Place Limited | Professional & scientific | 2011 |
| Thistlemead Properties Limited | Construction | 2004 |
| Thomas Property Investing Ltd | Real estate | 2023 |
| Thomas Property Management Group Limited | Real estate | 2025 |
| Thomas Walker Building & Refurbishment Ltd | Construction | 2022 |
| Thomas(P.T.F.T.)Limited | Real estate | 1935 |
| Thomson & Sons Bespoke Construction Ltd | Construction | 2026 |
| Thorcraft GAS Limited | Wholesale & retail | 2009 |
| Thorcraft Limited | Wholesale & retail | 2007 |
| Thorndove Limited | Real estate | 2011 |
| Thorne Track Ltd | Financial services | 2021 |
| TI Tokyo (UK) Ltd | Information & communication | 2017 |
| Tiger Debtco Limited | Professional & scientific | 2016 |
| Tiger Group Limited | Professional & scientific | 2013 |
| Tiger Midco Limited | Professional & scientific | 2016 |
| Tilts Garage Ltd | Manufacturing | 2025 |
| Timothy David Limited | Administrative & support | 2020 |
| Tjlam Holdings Limited | Financial services | 2016 |
| TL Leisure Limited | Arts & recreation | 2021 |
| Tocaj Ltd | Professional & scientific | 2024 |
| TOM Gooders Tree Surgery Ltd | Agriculture & fishing | 2020 |
| TOM Palmer Studio Ltd | Arts & recreation | 2014 |
| Tookey Memorials Limited | Other services | 2002 |
| Toolnut Ltd | Wholesale & retail | 2008 |
| Top Rock Freehold Limited | Real estate | 2024 |
| Top Gear Equestrian Limited | Wholesale & retail | 2011 |
| Top Rock Homes Ltd | Real estate | 2020 |
| Torr Scientific Limited | Manufacturing | 1998 |
| Total Build Developers (East Sussex) Ltd | Construction | 2024 |
| Total Flooring Solutions South East Limited | Construction | 2023 |
| Total Interior Installations Limited | Administrative & support | 2009 |
| Total Property South East Ltd | Transport & logistics | 2025 |
| Totem Visual Ltd | Manufacturing | 2021 |