| THE Murton Group Ltd | Financial services | 2020 |
| THE Muzzle Movement Limited | Wholesale & retail | 2023 |
| THE Novo Design House Ltd | Professional & scientific | 2018 |
| THE Nurture Nest Limited | Health & social care | 2016 |
| THE Olive Terrace Ltd | Hospitality | 2026 |
| THE Pain Clinic Bristol Limited | Health & social care | 2018 |
| THE Profit Key Limited | Extraterritorial | 2013 |
| THE Profit Key Media Limited | Administrative & support | 2014 |
| THE Refinery Nottm Ltd | Hospitality | 2025 |
| THE Residences Group Ltd | Real estate | 2018 |
| THE Rose Banqueting Suites Ltd | Hospitality | 2019 |
| THE RPA Team Limited | Professional & scientific | 2018 |
| THE Shaun Barker Foundation | Health & social care | 2014 |
| THE Smisby Arms Limited | Hospitality | 2011 |
| THE Speakers Agency Limited | Extraterritorial | 2004 |
| THE Spirit Vaults Limited | Hospitality | 2019 |
| THE Stone and Tile Company Limited | Wholesale & retail | 2011 |
| THE Suit Lounge (Ashby) Limited | Wholesale & retail | 2025 |
| THE Temple Hair & Beauty Spa Ltd | Other services | 2013 |
| THE Temple Hair Spa Melbourne Limited | Other services | 2024 |
| THE Touring Group Limited | Arts & recreation | 2015 |
| THE Wall Covering Specialists (South) Ltd | Construction | 2025 |
| THE Willow Tree Group Ltd | Professional & scientific | 2025 |
| Themil Ltd | Real estate | 2022 |
| Think Hospitality Contracts T/A THC Ltd | Construction | 2024 |
| Thirteenk Limited | Real estate | 2005 |
| Three Pillars Contractors Limited | Construction | 2013 |
| Tict Ltd. | Information & communication | 2017 |
| Time and Motion Limited | Manufacturing | 2025 |
| Titus Systems Ltd | Manufacturing | 2024 |
| TJ GAS Services Ltd | Construction | 2026 |
| Tlwc Limited | Wholesale & retail | 2025 |
| TM Horsley Consulting Limited | Professional & scientific | 2016 |
| Tmbc Limited | Administrative & support | 2016 |
| TMD 2 Limited | Construction | 2022 |
| Toad Innovations Limited | Extraterritorial | 1993 |
| Toad Limited | Extraterritorial | 2000 |
| TOM Lynall Specialist Jewellers Limited | Manufacturing | 2015 |
| Tommat Properties Ltd | Real estate | 2026 |
| Tonic 4 Kids Ltd | Professional & scientific | 2015 |
| Tonic Cosmetic Surgery Centre Ltd | Health & social care | 2009 |
| Tonic Property Holdings Limited | Real estate | 2022 |
| Tonic Surgery Limited | Health & social care | 2020 |
| Tonic Treatments Limited | Health & social care | 2023 |
| Tonic Weight Loss Surgery Limited | Health & social care | 2014 |
| Tony Martin Consulting Limited | Other services | 2014 |
| Top Academy Aesthetics Limited | Health & social care | 2020 |
| Top Aesthetics Direct Limited | Wholesale & retail | 2021 |
| Top Aesthetics Limited | Health & social care | 2019 |
| TPS Group Ltd | Construction | 2025 |
| Trade Bridge Home Solutions Limited | Construction | 2026 |
| Trade Vehicle Auctions Ltd | Other services | 2019 |
| Travel Menorca Limited | Administrative & support | 2002 |
| Trax Construction Limited | Construction | 2014 |
| Trent Technology Ltd | Professional & scientific | 2011 |
| Trinity Court Residents Ltd | Professional & scientific | 2019 |
| Trio-Tronics Manufacturing UK Ltd | Manufacturing | 2024 |
| True Value Solutions Ltd | Professional & scientific | 2018 |
| Trunature Limited | Manufacturing | 1986 |
| Trunet (UK) Limited | Manufacturing | 2007 |
| Trunet Packaging Services Ltd | Wholesale & retail | 2005 |
| Trusted Supplier Network Ltd | Professional & scientific | 2026 |
| Turney Street Outings Limited | Financial services | 2018 |
| Turnstile Limited | Professional & scientific | 1989 |
| Turville Group Ltd | Financial services | 2022 |
| Turville Properties 10 Ltd | Real estate | 2018 |
| Turville Properties 11 Ltd | Real estate | 2018 |
| Turville Properties 12 Ltd | Real estate | 2019 |
| Turville Properties 14 Ltd | Real estate | 2019 |
| Turville Properties 15 Ltd | Real estate | 2019 |
| Turville Properties Ltd | Real estate | 2017 |
| Turville Property Investments Ltd | Real estate | 2018 |
| TWB Town Planning Consultants Ltd | Professional & scientific | 2021 |
| Twenty SIX and SIX Limited | Professional & scientific | 2019 |
| U-Vape Longeaton Ltd | Wholesale & retail | 2023 |
| Ubik Digital Limited | Professional & scientific | 2018 |
| UK Bits Ltd | Information & communication | 2006 |
| UK Site Accommodation Limited | Administrative & support | 2026 |
| UK Trade Conservatorys Ltd | Wholesale & retail | 2009 |
| United World School of English Ltd | Extraterritorial | 2019 |
| Unsigned Software Ltd | Information & communication | 2021 |
| UP Roar Ltd. | Wholesale & retail | 2016 |
| Urban Atelier Ltd | Wholesale & retail | 2026 |
| Urbanrambler Ltd | Wholesale & retail | 2021 |
| Uwezo Ltd | Professional & scientific | 2019 |
| V J L Consulting Limited | Information & communication | 2022 |
| Vaultnorth Limited | Real estate | 1985 |
| Venus Nail Studio Ltd | Other services | 2025 |
| Vericom Consultants Limited | Professional & scientific | 2018 |
| Verto Advisory Limited | Professional & scientific | 2025 |
| Viamen Ltd | Information & communication | 2010 |
| Vihaan Limited | Information & communication | 2014 |
| Vinod Vijh Limited | Professional & scientific | 1991 |
| Vintage Ford Ltd | Wholesale & retail | 2012 |
| Violet Haze Productions Ltd | Information & communication | 2022 |
| Viral Ventures (UK) Limited | Administrative & support | 2018 |
| Visit Menorca Limited | Professional & scientific | 2004 |
| Vita Technologies Limited | Information & communication | 2025 |
| Vivari Ltd | Professional & scientific | 2018 |
| VK Finserv Ltd | Professional & scientific | 2021 |