| THE Actualisation Project Ltd | Health & social care | 2025 |
| THE Arab Center for Arts London Ltd | Hospitality | 2022 |
| THE Beach House U.K Ltd | Health & social care | 2012 |
| THE Cleaning Company Southend on Sea Limited | Administrative & support | 2024 |
| THE Colonnade 250 Limited | Households | 2010 |
| THE Daily Grab Limited | Wholesale & retail | 2025 |
| THE Daisy Patch Ltd | Arts & recreation | 2025 |
| THE Elusive Idea Ltd | Administrative & support | 2014 |
| THE Event Safety Company Limited | Professional & scientific | 2013 |
| THE Fish Inn Limited | Hospitality | 2025 |
| THE Four Meteor RTM Company Limited | Households | 2019 |
| THE Fruit & VEG Kids Ltd | Information & communication | 2009 |
| THE Garden (Westcliff) Ltd | Hospitality | 2022 |
| THE Grange at Chadwell Heath Management Company Limited | Households | 2004 |
| THE Grove Shoot Ltd | Arts & recreation | 2022 |
| THE Henry Centre Ltd | Other services | 2017 |
| THE Ideal Print Company Ltd | Manufacturing | 2021 |
| THE Jude Harvey Foundation | Health & social care | 2023 |
| THE Leaders of Worship and Preachers Homes | Health & social care | 2005 |
| THE Leas Management Company Limited | Real estate | 1996 |
| THE Legal Cashier Ltd | Professional & scientific | 2025 |
| THE Maldon MUD Race Ltd | Administrative & support | 2009 |
| THE Nail File Limited | Other services | 2014 |
| THE Positive Tribes Ltd | Information & communication | 2020 |
| THE Red Lion Wiltshire Limited | Hospitality | 2023 |
| THE Right Wealth Limited | Professional & scientific | 2021 |
| THE Southend-On-Sea Darby & Joan Organisation Limited | Health & social care | 2002 |
| THE Steakranch Butchery Ltd | Wholesale & retail | 2017 |
| THE Training Team Ltd | Administrative & support | 2006 |
| THE Tuition POD Limited | Education | 2016 |
| THE UK Web Design Company Ltd | Information & communication | 2018 |
| THE Urban Landlord Ltd | Real estate | 2024 |
| THE Wild Hare Hair Colour Specialist Ltd | Other services | 2019 |
| Thefactorybar Limited | Hospitality | 2022 |
| THEREALDEAL86 Ltd | Arts & recreation | 2024 |
| Thermal Fire Solutions Ltd | Public administration | 2022 |
| Thirteen ST. Vincents Limited | Households | 1974 |
| Thompson Build Group Ltd | Construction | 2026 |
| Thompson Electrical Installations Ltd | Construction | 2024 |
| THP Surveyors Limited | Professional & scientific | 2009 |
| Three Dees Estates Ltd | Construction | 2025 |
| Three Kingdoms Ltd | Real estate | 2009 |
| Three Little Ones Ltd | Wholesale & retail | 2020 |
| Three Oaks Hotels Co. Ltd | Hospitality | 2025 |
| Ticketing Exchanges Ltd | Wholesale & retail | 2026 |
| Tien DAT Holding Ltd | Real estate | 2019 |
| Tiger Car Sales Ltd | Wholesale & retail | 2023 |
| Tigergold Limited | Hospitality | 2019 |
| Tiller Capital Ltd | Wholesale & retail | 2024 |
| TIM Coombs Ltd | Other services | 2015 |
| Timtay Property Limited | Real estate | 2026 |
| Tiny Minds Ltd | Health & social care | 2025 |
| Tiny Sunshine Ltd | Health & social care | 2024 |
| Titan (UK) Ltd | Professional & scientific | 2014 |
| TJW Technical Support Services Ltd | Professional & scientific | 2023 |
| TKC Catering Ltd | Hospitality | 2026 |
| TKN Innovation Technologies Ltd | Wholesale & retail | 2024 |
| TKN International Ltd | Administrative & support | 2024 |
| TOM & J Services Limited | Administrative & support | 2017 |
| Tongxin Ltd | Hospitality | 2022 |
| Tonnbo Asia Company Ltd | Hospitality | 2018 |
| Tonymac Aircraft Services Ltd | Manufacturing | 2021 |
| Top Ocean Ltd | Real estate | 2024 |
| Top WOK Star Limited | Hospitality | 2025 |
| Torque Leasing Limited | Wholesale & retail | 2016 |
| Torri Cadet Ltd | Wholesale & retail | 2023 |
| Totally Bewitched Limited | Professional & scientific | 2002 |
| Totum Software Limited | Information & communication | 2018 |
| Tout TI Bagay Ltd | Hospitality | 2020 |
| Tower Court Residents (Westcliff) Limited | Households | 1965 |
| Trackside Medicals Ltd | Health & social care | 2023 |
| Training Channel Ltd | Transport & logistics | 2022 |
| Transcon Solutions Ltd | Transport & logistics | 2022 |
| Transform Business Services Ltd | Professional & scientific | 2018 |
| Transformative Health Ltd | Wholesale & retail | 2024 |
| Transglide Limited | Transport & logistics | 2024 |
| Transportvaicard Ltd | Transport & logistics | 2018 |
| Tranworks Limited | Wholesale & retail | 2026 |
| Tread Podiatry Limited | Health & social care | 2014 |
| Treasure Gift Ltd | Extraterritorial | 2023 |
| Treasure House (Havant) Limited | Hospitality | 2019 |
| Treasured 333 Services Ltd | Transport & logistics | 2026 |
| Treat Supplies Limited | Wholesale & retail | 2025 |
| Treis Catering Limited | Hospitality | 2024 |
| Trendhive Traders Ltd | Wholesale & retail | 2025 |
| Triley Carpets Limited | Wholesale & retail | 2024 |
| Trillion Dollar Records Ltd | Manufacturing | 2025 |
| TRL Electrical Ltd | Construction | 2016 |
| TRR Chefs Limited | Hospitality | 2024 |
| Truebase Builds Ltd | Construction | 2025 |
| Trunley Trailer Services Limited | Administrative & support | 2024 |
| Trust Links Limited | Health & social care | 2002 |
| TW Utility Services Limited | Construction | 2015 |
| Twanglingjack Productions Limited | Arts & recreation | 2007 |
| Twenty Three Somerset Limited | Hospitality | 2026 |
| Twinklebellconfectionaries Ltd | Wholesale & retail | 2026 |
| Twins Cutz Ltd | Other services | 2021 |
| UDL Construction Technologies (UK) Limited | Construction | 2021 |
| UK Golf Zone Ltd | Arts & recreation | 2025 |
| UK Ortho Limited | Health & social care | 2017 |