| Tizzard Ltd | Real estate | 2010 |
| TJC Atlantic Limited | Professional & scientific | 2006 |
| TJJ Uroconsult Limited | Health & social care | 2020 |
| TJK Homes and Buildings Limited | Real estate | 2024 |
| TJL Building Solutions Limited | Construction | 2011 |
| TK Blackski Limited | Professional & scientific | 2011 |
| Tko.Grp Ltd | Professional & scientific | 2021 |
| TL Casa Ltd | Real estate | 2022 |
| TLD Development Ltd | Information & communication | 2017 |
| TLS Ideas Studio Ltd | Information & communication | 2019 |
| TM Moving Solutions Ltd | Transport & logistics | 2019 |
| TM Recycling UK Ltd | Water & waste | 2022 |
| TM Site Engineering Ltd | Construction | 2016 |
| TM Zeta Holdings Limited | Financial services | 2018 |
| Tm's Golden Spoon Cuisine Limited | Hospitality | 2021 |
| TMA Bournemouth Limited | Arts & recreation | 2026 |
| TMA Southampton Limited | Arts & recreation | 2026 |
| Tmco Dorset Limited | Administrative & support | 2012 |
| Tmcrm Limited | Information & communication | 2016 |
| TMD - Thomson Maintenance and Decorating Ltd | Construction | 2023 |
| TMD Plumbing and Heating Limited | Construction | 2015 |
| TML Developments Ltd | Other services | 2017 |
| TML Events Limited | Arts & recreation | 2014 |
| TMM UK & Souza Ltd | Wholesale & retail | 2019 |
| Toasted Orange Ltd | Construction | 2022 |
| TOB the First (UK) Limited | Arts & recreation | 2019 |
| Tobala Digital Limited | Wholesale & retail | 2025 |
| Tobiszewska Ltd | Health & social care | 2013 |
| Today Kebab Group Ltd | Hospitality | 2025 |
| Toft Mansions (Bournemouth) Management Company Limited | Households | 1971 |
| Toft Mansions Freehold Company Limited | Real estate | 1998 |
| Toga Brickwork Ltd | Construction | 2025 |
| Toland Management Limited | Households | 1993 |
| Tollard Court Management Limited | Households | 1990 |
| TOM Alexander Lloyd Ltd | Information & communication | 2024 |
| TOM Bowman Limited | Manufacturing | 2010 |
| TOM James Builders Limited | Construction | 2005 |
| TOM Rowsell Limited | Construction | 2018 |
| TOM Yacht Services Ltd | Professional & scientific | 2018 |
| Tomas Family Limited | Transport & logistics | 2017 |
| Tomj Construction Limited | Construction | 2026 |
| Tomk Ltd | Construction | 2024 |
| Tomken Ltd | Professional & scientific | 2018 |
| Tomoeve Ltd | Administrative & support | 2024 |
| Tomov Transport Limited | Transport & logistics | 2022 |
| Tonic Rooms Ltd | Hospitality | 2025 |
| Tony Rudd Entertainments Limited | Arts & recreation | 2004 |
| Tony Wood Holdings Limited | Wholesale & retail | 1986 |
| Tony Wood Trading Limited | Professional & scientific | 1986 |
| Tonys Lounge Limited | Hospitality | 2025 |
| Tony’S CAF Limited | Hospitality | 2025 |
| Tooltag Limited | Administrative & support | 2017 |
| Toomers Limited | Manufacturing | 2000 |
| Toomey Design Limited | Information & communication | 2015 |
| TOOSHEK88 Ltd | Real estate | 2025 |
| Toothmaker Ltd | Other services | 2025 |
| Top Bananas PRE School Ltd | Education | 2015 |
| Top Cat Media Limited | Professional & scientific | 1998 |
| Top Cleaning Solutions Ltd | Administrative & support | 2018 |
| Top CUT Barber (Bournemouth) Ltd | Other services | 2023 |
| Top Deck Swanage Limited | Hospitality | 2022 |
| Top Gold Developments Ltd | Real estate | 2024 |
| Top Line Management UK Limited | Administrative & support | 2003 |
| Top New Barber Ltd | Other services | 2024 |
| Top of the Shop Cleaning Home Help Services Ltd | Administrative & support | 2024 |
| Top Quality Renovations Bournemouth Ltd | Construction | 2023 |
| Top REPAR3 Smart Ltd | Manufacturing | 2025 |
| Top Value Essentials Ltd | Wholesale & retail | 2026 |
| Top Vibe Drivers Ltd | Transport & logistics | 2023 |
| Top WOK Original Limited | Hospitality | 2006 |
| Topaz Decorating Services Limited | Construction | 2025 |
| Topcyge Ltd | Construction | 2016 |
| Topped UP Consultancy Limited | Professional & scientific | 2026 |
| Tops Day Nurseries Limited | Education | 2016 |
| Tops Day Nursery Limited | Education | 1998 |
| TOR EOT Trustees Limited | Administrative & support | 2021 |
| Tor&Co Holdings Limited | Financial services | 2006 |
| Torandco Limited | Professional & scientific | 1985 |
| Torchvale Limited | Construction | 2010 |
| Torpey Ltd | Construction | 2020 |
| Tortoba Packaging Ltd | Wholesale & retail | 2024 |
| Total Company Solutions Ltd | Professional & scientific | 2005 |
| Total Construction and Maintenance Limited | Construction | 2010 |
| Total Drainage Ltd | Professional & scientific | 2025 |
| Total Facilities South Ltd | Administrative & support | 2025 |
| Total FD Solutions Ltd | Professional & scientific | 2021 |
| Total Home Loans Limited | Administrative & support | 2007 |
| Total Project Services Limited | Professional & scientific | 2005 |
| Total Renovations Dorset Ltd | Construction | 2024 |
| Total TMJ Limited | Professional & scientific | 2016 |
| Total Valve Spares Limited | Wholesale & retail | 2010 |
| Totalsecuresolutions Ltd | Administrative & support | 2025 |
| Totol Ventures Ltd | Information & communication | 2019 |
| Toucan Property Partners Limited | Real estate | 2019 |
| Toucantext Limited | Information & communication | 2018 |
| Touch Access Ltd | Construction | 2010 |
| Touch of Beehot Ltd | Wholesale & retail | 2026 |
| Touchstone Training Limited | Education | 2004 |
| Toughmuck Ltd | Administrative & support | 2019 |
| Tourbillion Technology Limited | Professional & scientific | 2010 |