| Tomit Enterprises Ltd | Hospitality | 2025 |
| Toneworm Design Ltd | Information & communication | 2011 |
| Tontine Restaurant Limited | Hospitality | 2024 |
| Top CUT Barber.Shop Kent Ltd | Other services | 2021 |
| Topdropz Ltd | Transport & logistics | 2019 |
| Topp Notch Ltd. | Administrative & support | 2015 |
| Torvic Gardens Ltd | Real estate | 2011 |
| Total Fitness MIX Ltd | Arts & recreation | 2015 |
| Totally Commerce Limited | Information & communication | 1995 |
| Totum Education Ltd | Education | 2015 |
| Touchtec Cloud Communications Ltd | Other services | 2020 |
| Touchtec Services Group Ltd | Other services | 2024 |
| Towner’S Toasties Ltd | Hospitality | 2025 |
| Townsend Life Care Ltd | Health & social care | 2010 |
| Townsend Property Investments Ltd | Construction | 2013 |
| Townsend Property Ltd | Construction | 2012 |
| Tozercycles Limited | Administrative & support | 2007 |
| TPK Property Ltd | Real estate | 2026 |
| TPS Services Limited | Manufacturing | 2000 |
| TR Consulting INT Ltd | Administrative & support | 2011 |
| TR Hospitality Limited | Hospitality | 2025 |
| Trace Creative Agency Ltd | Professional & scientific | 2017 |
| Track Companion Limited | Information & communication | 2023 |
| Tradercliq Ltd | Extraterritorial | 2015 |
| Tradeversityuk Ltd | Wholesale & retail | 2025 |
| Tradex Home Improvements Limited | Wholesale & retail | 2006 |
| Tranquillity Financial Services Limited | Financial services | 2022 |
| Transmanche Consultants Ltd | Professional & scientific | 1996 |
| Transport-Rado Ltd | Transport & logistics | 2016 |
| Transylvania Flavours Ltd | Wholesale & retail | 2024 |
| Treat ME Right CIC | Health & social care | 2020 |
| Trebor Tree Surgeons Limited | Construction | 2014 |
| Trestle Desk Ltd | Manufacturing | 2023 |
| TRI West Ltd | Administrative & support | 2014 |
| Trimtwelve Limited | Administrative & support | 2015 |
| Trinity Enclosure Freehold Management Limited | Households | 2024 |
| Triple T (FEN Tiger) Ltd | Professional & scientific | 2023 |
| Triplec - Cheryll Champion Consultancy Ltd | Professional & scientific | 2026 |
| Troofoods Ltd | Manufacturing | 2015 |
| Truscott House Management Ltd | Households | 2023 |
| Trusted Fire Solutions Ltd | Other services | 2024 |
| TS Retail Limited | Wholesale & retail | 2021 |
| Tscr Ltd | Real estate | 2020 |
| TSS Plant Hire Ltd | Construction | 2018 |
| TST Engineering Services Ltd | Professional & scientific | 2025 |
| TTA Servcies Limited | Wholesale & retail | 2019 |
| Ttlf Ltd | Households | 2022 |
| Ttnd Ltd | Hospitality | 2022 |
| Tudor Lodge Care Home Limited | Health & social care | 2016 |
| Tudor Lodge Holdings Limited | Other services | 2017 |
| Tunnest Consulting UK Ltd | Professional & scientific | 2025 |
| Turner Bespoke Services Limited | Wholesale & retail | 2003 |
| Turner Schools | Education | 2016 |
| Two Bears Ltd | Real estate | 2020 |
| Two-O-Nine Company Limited | Households | 2000 |
| Tybedkas Folkestone Ltd | Wholesale & retail | 2025 |
| Tyre Cart Ltd | Administrative & support | 2020 |
| Tyre-Ease Ltd | Wholesale & retail | 2021 |
| Tyton Business Services Limited | Professional & scientific | 2022 |
| Tyton Retail Services Limited | Wholesale & retail | 2023 |
| U.W.F. Investments Limited | Administrative & support | 1998 |
| Ubatrend Limited | Real estate | 1982 |
| UK and Europe Pet Taxi Limited | Transport & logistics | 2022 |
| UK Bike Buyer Ltd | Wholesale & retail | 2022 |
| UK Drylining Pro Ltd | Construction | 2025 |
| UK Home Finishes Ltd | Construction | 2019 |
| UK Spray Finishes Ltd | Construction | 2015 |
| Ukrainians Help | Administrative & support | 2022 |
| Ukrfitt Ltd | Health & social care | 2022 |
| Ulmus Limited | Information & communication | 2022 |
| Ultimo Consultants Ltd | Professional & scientific | 2025 |
| ULTRAFL8 Limited | Arts & recreation | 2005 |
| Ultrasound YOU Limited | Health & social care | 2009 |
| Unboxed Folkestone CIC | Hospitality | 2025 |
| Underhill Homes Ltd | Construction | 2023 |
| Underwood Close Management Company Limited | Households | 1995 |
| Underwood Consultancy Ltd | Information & communication | 2022 |
| Union 10 Limited | Households | 2004 |
| Universal Interiors Southeast Limited | Construction | 2014 |
| Unlearn Normal Ltd | Professional & scientific | 2023 |
| Untold Theatre Ltd | Arts & recreation | 2014 |
| Upgrademykitchen Ltd | Professional & scientific | 2021 |
| Urban Daghaus Ltd | Real estate | 2025 |
| Urban Room Folkestone Ltd | Hospitality | 2025 |
| Users in Mind Ltd | Information & communication | 2014 |
| Usharanjan Ltd | Transport & logistics | 2023 |
| Ushers Wholesale Limited | Wholesale & retail | 2018 |
| Uszfull Ltd | Construction | 2022 |
| V Cross Ltd | Professional & scientific | 2022 |
| V Diff Ltd | Professional & scientific | 2023 |
| V R S-Co (Sussex) Ltd | Other services | 2026 |
| V R Sani-Co (Sussex) Limited | Other services | 2026 |
| V R Sani-Co Holdings Limited | Financial services | 2025 |
| Vabbe Limited | Extraterritorial | 2022 |
| Valentina Home Ltd | Wholesale & retail | 2017 |
| Valiant Sailor Hospitality Ltd | Hospitality | 2025 |
| Van Osta Consulting Limited | Professional & scientific | 2017 |
| Vanity Flair Ltd | Other services | 2015 |
| Vantage EV Solutions Limited | Professional & scientific | 2021 |
| Vantage Vehicles Ltd | Wholesale & retail | 2018 |