| TAI HE Jing Tang Ltd | Professional & scientific | 2026 |
| Taicu Ltd | Transport & logistics | 2024 |
| Taiga Associates Limited | Professional & scientific | 2016 |
| Taikang Limited | Hospitality | 2022 |
| Taikin Ltd | Real estate | 2021 |
| Tailor Engineering Group Ltd | Professional & scientific | 2020 |
| Tailored Body Limited | Administrative & support | 2016 |
| Tailored Ecology Limited | Administrative & support | 2015 |
| Tailored Learning Solutions Ltd | Health & social care | 2015 |
| Tailored Recruitment Partners Limited | Administrative & support | 2025 |
| Tailoredbyt Ltd | Wholesale & retail | 2025 |
| Taimed Ltd | Health & social care | 2023 |
| Tainted Media Ltd | Information & communication | 2012 |
| Taiyo Holdings Ltd | Information & communication | 2025 |
| TAJ Express Limited | Wholesale & retail | 2023 |
| TAJ Majestic Dining Limited | Hospitality | 2023 |
| TAJ Sweets Limited | Hospitality | 2023 |
| TAK Private Limited | Wholesale & retail | 2026 |
| Take IT Easy 1 Ltd | Transport & logistics | 2019 |
| Take IT Easy LAB Ltd | Professional & scientific | 2021 |
| Taking Liberties Limited | Hospitality | 2014 |
| Takrony Care Limited | Health & social care | 2012 |
| Taku Eben &Co Ltd | Health & social care | 2024 |
| TAL Developments Ltd | Real estate | 2019 |
| TAL Properties (Yorkshire) Limited | Real estate | 2022 |
| Tala Psychological Ltd | Health & social care | 2022 |
| Talamh Ltd | Wholesale & retail | 2023 |
| Talb Care Limited | Health & social care | 2023 |
| Talbert Limited | Real estate | 2016 |
| Talbol Properties Ltd | Real estate | 2022 |
| Talbot Commercial Holdings Limited | Construction | 2021 |
| Talbutt Interiors Limited | Professional & scientific | 2014 |
| Tale of HER Ltd | Wholesale & retail | 2024 |
| Talent : Minerva Clarke Ltd | Administrative & support | 2022 |
| Talent Fields UK Services Limited | Professional & scientific | 2024 |
| Talent Jaeger Ltd | Administrative & support | 2015 |
| Talented Trades Academy Ltd | Administrative & support | 2025 |
| Talented Training Limited | Administrative & support | 2015 |
| Talentshine Solutions Ltd | Administrative & support | 2016 |
| Talha Munir Ltd | Education | 2023 |
| Talib Food Store Ltd | Wholesale & retail | 2017 |
| Taliesin Solutions Limited | Information & communication | 2014 |
| Talisman Colombia Holdco Limited | Administrative & support | 2010 |
| Talisman Perpetual (Norway) Limited | Administrative & support | 2012 |
| Talk Access and Lifting Limited | Construction | 2024 |
| Talk Access Limited | Construction | 2014 |
| Talk Cleaning Limited | Administrative & support | 2004 |
| Talk Deep Counselling Ltd | Wholesale & retail | 2026 |
| Talking Hanger Limited | Manufacturing | 2017 |
| Talking Heads (Love Your Hair) Limited | Other services | 2014 |
| Talking Pieces Ltd | Other services | 2026 |
| Talking Tech Ltd | Other services | 2024 |
| Talkinglens Productions Ltd | Information & communication | 2022 |
| Tall Agency Ltd | Professional & scientific | 2017 |
| Tall Group Ltd | Financial services | 2026 |
| Tall Momentum Ltd | Professional & scientific | 2026 |
| Tall Trees (Woodlands) Ltd | Real estate | 2025 |
| Tallant Ltd | Construction | 2019 |
| Tallawah Academy CIC | Education | 2024 |
| Taller Digital Ltd | Professional & scientific | 2024 |
| Talmar Properties Limited | Administrative & support | 2016 |
| Talmon Limited | Real estate | 1998 |
| Talocan Ltd | Administrative & support | 2022 |
| Taloh Ltd | Information & communication | 2025 |
| Talon Manufacturing Limited | Manufacturing | 2016 |
| Talon-Ted Nails Ltd | Other services | 2025 |
| Talos Management Limited | Information & communication | 2020 |
| Talua Medical Ltd | Health & social care | 2026 |
| TAM Endohealth Limited | Health & social care | 2022 |
| TAM Holdings Limited | Real estate | 2016 |
| TAM JAI Thai Ltd | Other services | 2022 |
| Tamalada Quorn Limited | Hospitality | 2019 |
| Tamarii | Professional & scientific | 2023 |
| Tamas Horcsak Distribution Services Ltd | Transport & logistics | 2023 |
| Tame & Wild Drinks Limited | Wholesale & retail | 2019 |
| Tamkeen Investments Ltd | Construction | 2025 |
| Tamnc Limited | Wholesale & retail | 2019 |
| Tamp 'N' Swirl Ltd | Hospitality | 2004 |
| Tamp N Swirl (2) Ltd | Hospitality | 2017 |
| Tamp N Swirl (3) Ltd | Hospitality | 2020 |
| Tamp Plumbing & Heating Ltd | Construction | 2025 |
| Tampnet UK Limited | Information & communication | 2014 |
| Tamrx Ltd | Information & communication | 2025 |
| Tamtam UK Ltd | Health & social care | 2019 |
| TAN EYE Consultancy Ltd | Health & social care | 2023 |
| TAN Hill Enterprises Ltd | Hospitality | 2018 |
| TAN Hill PUB Grub Ltd | Hospitality | 2026 |
| TAN Vault UK Limited | Wholesale & retail | 2026 |
| Tan's Kitchen Limited | Hospitality | 2025 |
| Tanade Consulting Ltd | Professional & scientific | 2011 |
| Tanai Ltd | Health & social care | 2014 |
| Tanaura Ltd | Other services | 2026 |
| Tandem (Leeds) Ltd | Wholesale & retail | 2018 |
| Tandim Limited | Professional & scientific | 2001 |
| Tandoor Master Ltd | Wholesale & retail | 2021 |
| Tandoori Caterers Limited | Hospitality | 2007 |
| Tandt Motors (WK) Limited | Wholesale & retail | 2017 |
| Tanfastique Limited | Professional & scientific | 2000 |
| Tang HUO Kungfu (UK) Ltd | Hospitality | 2024 |
| Tangerine Sky Limited | Professional & scientific | 2021 |