| TCM Air Conditioning Services Ltd | Construction | 2021 |
| Tcmc Consultancy Ltd | Information & communication | 2019 |
| TCS Crawley Limited | Transport & logistics | 2011 |
| TDM Linton Ltd | Information & communication | 2016 |
| Tdsg Properties Ltd | Real estate | 2024 |
| Tea and Natter Ltd | Hospitality | 2020 |
| Tea Vending Machines PVT Ltd | Administrative & support | 2024 |
| Teach ME English Limited | Education | 2021 |
| Teahouseclub Ltd | Professional & scientific | 2023 |
| Team Programme Management Limited | Extraterritorial | 2016 |
| Teamclean South East Ltd | Administrative & support | 2025 |
| Teamsales Recruitment Limited | Extraterritorial | 2019 |
| Teamwear Supply Limited | Manufacturing | 2026 |
| TEB Cleaning Services Limited | Extraterritorial | 1933 |
| Tecc Consulting Ltd | Professional & scientific | 2020 |
| Tech Boff Ltd | Wholesale & retail | 2026 |
| Tech Logiq Limited | Financial services | 2014 |
| Tech With Ayrass Ltd | Information & communication | 2025 |
| Tech With TAS Ltd | Information & communication | 2025 |
| Techbaba Ltd | Information & communication | 2023 |
| Techelec (Brighton) Limited | Construction | 1968 |
| Techmodia Ltd | Information & communication | 2020 |
| Technologies Integrator Ltd | Manufacturing | 2021 |
| Technopedia Limited | Information & communication | 2017 |
| Techrenewuk Limited | Wholesale & retail | 2025 |
| Techspecs Inc Ltd | Information & communication | 2023 |
| Techtonic Innovations Ltd | Information & communication | 2025 |
| Techtonic Partners Limited | Administrative & support | 2023 |
| Teckwood Ltd | Wholesale & retail | 2013 |
| TEEDEE365 Ltd | Wholesale & retail | 2016 |
| TEK Haul Ltd | Wholesale & retail | 2025 |
| Telcon International Limited | Manufacturing | 2017 |
| Telguard Limited | Manufacturing | 2011 |
| Telrock Systems Limited | Information & communication | 2014 |
| Tempire Investments Limited | Financial services | 2014 |
| TEN Arches Logistics Limited | Transport & logistics | 2021 |
| TEO Supreme Bifolds Limited | Construction | 2022 |
| Terra Explore Ltd | Mining & quarrying | 2017 |
| Terrapin Investments Ltd | Information & communication | 2012 |
| Terravisio Geosolutions (UK) Limited | Wholesale & retail | 2018 |
| Terwane Estates Limited | Real estate | 2024 |
| Terwane Healthcare Ltd | Health & social care | 2019 |
| TES Compliance Limited | Construction | 2016 |
| Testec Automotive & EV Ltd | Wholesale & retail | 2023 |
| TESTING4YOU Ltd | Construction | 2012 |
| TFC Commercial Ltd | Financial services | 2025 |
| TG500 Ltd | Real estate | 2018 |
| TGB Services and Solutions Ltd | Transport & logistics | 2022 |
| TGM Building Services Ltd | Construction | 2024 |
| TH Contracts Ltd | Construction | 2026 |
| Thaiphatthana Limited | Hospitality | 2015 |
| That Building Company Ltd | Construction | 2023 |
| That Property Maintenance Company Ltd | Construction | 2024 |
| THE A9 Organisation Ltd | Information & communication | 2025 |
| THE Adasa Collective Limited | Wholesale & retail | 2025 |
| THE Amber Root Dining Ltd | Hospitality | 2025 |
| THE Apartment Company.Co.Uk Limited | Real estate | 2003 |
| THE Arts Award Initiative Limited | Education | 2011 |
| THE Auto Junction Limited | Wholesale & retail | 2018 |
| THE Back Care Clinic Limited | Education | 2005 |
| THE Bakery RTM Company Limited | Households | 2017 |
| THE Ballroom Dancers' Federation | Arts & recreation | 2018 |
| THE Beauty Box Salon Limited | Health & social care | 2013 |
| THE Bespoke Pergola Group Ltd | Manufacturing | 2026 |
| THE Bonnie Bloom Fashion Company Limited | Wholesale & retail | 2023 |
| THE Branding House Limited | Manufacturing | 2011 |
| THE Brick Summit Ltd | Wholesale & retail | 2025 |
| THE Burger TRK Limited | Hospitality | 2021 |
| THE Cake Tailor Limited | Extraterritorial | 2011 |
| THE Captain ROX Limited | Wholesale & retail | 2020 |
| THE Car Hire Specialists (Crawley) Ltd | Administrative & support | 2008 |
| THE Chaos Collective Ltd | Professional & scientific | 2023 |
| THE Charis Centre Limited | Other services | 2012 |
| THE Choices Group Ltd | Professional & scientific | 1996 |
| THE Clean Wash Company Ltd | Other services | 2016 |
| THE Clinic Checker Limited | Public administration | 2024 |
| THE Cloud Consultancy Europe Ltd | Information & communication | 2015 |
| THE Comfort Hub Ltd | Hospitality | 2023 |
| THE Concrete Clone Limited | Construction | 1997 |
| THE Crawley Community Shop Limited | Wholesale & retail | 2016 |
| THE Crawley Festival | Arts & recreation | 1990 |
| THE Crunchyside Limited | Professional & scientific | 2024 |
| THE Cutting Room Barbers Ltd | Other services | 2019 |
| THE CV Nerd Ltd | Administrative & support | 2022 |
| THE Damp and Timber Company Ltd | Construction | 2020 |
| THE Delta Protection Group (Guarding) Ltd | Administrative & support | 2026 |
| THE Delta Protection Group (Response) Ltd | Administrative & support | 2026 |
| THE Delta Protection Group Limited | Administrative & support | 2022 |
| THE Delta Security Academy Ltd | Administrative & support | 2026 |
| THE Digby PUB Company Limited | Hospitality | 2019 |
| THE Diversity & Inclusion Consultancy Ltd | Administrative & support | 2019 |
| THE Donkey Public House Limited | Hospitality | 2002 |
| THE Doughnut Club Ltd | Manufacturing | 2025 |
| THE Dress UP Dress Shop Limited | Wholesale & retail | 2025 |
| THE Dusty Angel Company Limited | Transport & logistics | 2019 |
| THE Ecom PAD Ltd | Wholesale & retail | 2026 |
| THE Energy Grid Limited | Professional & scientific | 2026 |
| THE Exercise Movement and Dance Partnership Limited | Arts & recreation | 2006 |
| THE Feel Good Nurse Ltd | Other services | 2026 |
| THE Fernandes Clinic Ltd | Wholesale & retail | 2025 |