| Tokova Limited | Administrative & support | 2021 |
| Tokyo Boeki Techno-System UK Ltd. | Manufacturing | 2014 |
| Tokyo Calm Limited | Professional & scientific | 2021 |
| Tokyo Motors Limited | Real estate | 2021 |
| TOL46 Limited | Professional & scientific | 2019 |
| Told Consultancy Ltd | Financial services | 2024 |
| Told Publishing Ltd | Information & communication | 2025 |
| Toll Bar Garage Limited | Wholesale & retail | 1991 |
| Toller Park Properties Limited | Real estate | 2006 |
| Tolmers Newco 1 Limited | Arts & recreation | 2014 |
| Tolmers Newco 2 Limited | Arts & recreation | 2014 |
| Toloo Ltd | Wholesale & retail | 2021 |
| Tolska Developments Limited | Real estate | 2006 |
| Tolson Group Limited | Financial services | 2021 |
| Tolyn Consult Ltd | Information & communication | 2015 |
| TOM Cars (WKD) Ltd | Wholesale & retail | 2026 |
| TOM Cochrane Associates Ltd | Professional & scientific | 2009 |
| TOM Cohen Consulting Limited | Professional & scientific | 2018 |
| TOM Doughty Consultancy Limited | Information & communication | 2015 |
| TOM Downes Communications Limited | Construction | 2019 |
| TOM Firth Limited | Construction | 2025 |
| TOM Gulmantowicz Limited | Administrative & support | 2014 |
| TOM Harding Consulting Ltd | Information & communication | 2023 |
| TOM Holmes Marketing Ltd | Professional & scientific | 2025 |
| TOM J Transport Ltd | Transport & logistics | 2017 |
| TOM Jackson Media Limited | Professional & scientific | 2022 |
| TOM Lloyd Ltd | Professional & scientific | 2022 |
| TOM Maxwell Furniture & Cabinetry Ltd | Manufacturing | 2020 |
| TOM Paginton Ltd | Professional & scientific | 2016 |
| TOM Parry Ltd | Wholesale & retail | 2026 |
| TOM Seldon Software Ltd | Information & communication | 2019 |
| TOM Walker and Sons Limited | Manufacturing | 1982 |
| Toma Services (Yorkshire) Limited | Construction | 2012 |
| Tomas Oppedal Limited | Other services | 2003 |
| Tomasso Brothers Limited | Real estate | 2012 |
| Tomasso Ltd | Wholesale & retail | 2011 |
| Tomasso Properties Limited | Real estate | 2020 |
| Tomasz Szczepaniak Transport Ltd. | Transport & logistics | 2013 |
| Tomato Catering Ltd | Manufacturing | 2024 |
| Tomc Connect Ltd | Wholesale & retail | 2025 |
| Tomgibson Ltd | Construction | 2024 |
| Tomlin's Property Services Limited | Real estate | 2002 |
| Tommy Happs Limited | Professional & scientific | 2025 |
| Tommyrafiq Limited | Hospitality | 2023 |
| Tomo Limited | Other services | 2015 |
| Tomori Kitchen Ltd | Hospitality | 2026 |
| Tomorrow Platforms Ltd | Information & communication | 2026 |
| Tomorrows Creative Limited | Information & communication | 2015 |
| Tomson Consulting Ltd | Professional & scientific | 2016 |
| Tomurel Consulting Ltd | Professional & scientific | 2018 |
| Tomy Transport Services Ltd | Transport & logistics | 2014 |
| Tondeur Properties Ltd | Real estate | 2024 |
| Tone Hair Lounge Ltd | Other services | 2019 |
| Tong Park Cars Ltd | Wholesale & retail | 2009 |
| Tong Road Car Wash Ltd | Administrative & support | 2024 |
| Tong Road Developments Ltd | Construction | 2020 |
| Tong Road Foods Limited | Wholesale & retail | 2021 |
| Tong Road Motors Limited | Wholesale & retail | 1988 |
| Tong Road Pizzeria Ltd | Hospitality | 2025 |
| Tongbao Ltd | Wholesale & retail | 2024 |
| Toni Construction (Leeds) Ltd | Construction | 2024 |
| Toni Construction and Decoration Ltd | Construction | 2024 |
| Toni North Photography Limited | Professional & scientific | 2026 |
| Tonic Healthcare Recruitment Ltd | Administrative & support | 2018 |
| Tonire Properties Ltd | Real estate | 2012 |
| Tonlar Entertainment Limited | Administrative & support | 2018 |
| Tony Autos Leeds Ltd | Wholesale & retail | 2017 |
| Tony Bullock Ltd | Construction | 2020 |
| Tony Mchugh Demolition Ltd | Other services | 2016 |
| Tony Mewse Creative EYE Limited | Information & communication | 2005 |
| Tony Pugal Recruitment Limited | Administrative & support | 2009 |
| Tony Stag Ltd | Construction | 2015 |
| Tony Woods Family Butchers Limited | Wholesale & retail | 2003 |
| Tony's Bless Limited | Administrative & support | 2021 |
| Tonyowen.Dev Ltd | Information & communication | 2024 |
| Tonys Hrmz Ltd | Construction | 2023 |
| Tonys Skips Bradford Limited | Water & waste | 2020 |
| Tonysons Healthcare Services Limited | Health & social care | 2019 |
| Tonzi Limited | Administrative & support | 2019 |
| TOO Cool for School Ltd | Information & communication | 2023 |
| Tooba Medical Limited | Health & social care | 2013 |
| Toolkinguk Limited | Wholesale & retail | 2018 |
| Toolright Limited | Administrative & support | 2019 |
| Toontix Games Limited | Wholesale & retail | 2022 |
| Toor Carpets & Blinds Ltd | Other services | 2024 |
| Toothpassion Limited | Health & social care | 2008 |
| Toothpik Ltd | Information & communication | 2024 |
| Top 3 Search Ltd | Information & communication | 2018 |
| Top Best Limited | Extraterritorial | 2015 |
| Top BOY Limited | Administrative & support | 2015 |
| Top Business Leeds Ltd | Administrative & support | 2022 |
| Top Champs Boxing Ltd | Information & communication | 2026 |
| Top Co World Ltd | Wholesale & retail | 2025 |
| Top Cure Limited | Manufacturing | 2022 |
| Top Enterprises Ltd | Arts & recreation | 2010 |
| Top Erections Scaffolding Ltd | Construction | 2025 |
| Top Essentials Ltd | Wholesale & retail | 2025 |
| Top Fades Limited | Other services | 2019 |
| Top FADEZ1 Ltd | Other services | 2024 |
| Top G'S Limited | Wholesale & retail | 2022 |