| Twin Roots National Services Ltd | Transport & logistics | 2026 |
| Twindrops Trading Ltd | Wholesale & retail | 2024 |
| Twins Eyecare Ltd | Wholesale & retail | 2024 |
| Twinstar Group Ltd | Administrative & support | 2017 |
| Twinstar Healthcare Training Ltd | Administrative & support | 2023 |
| Twistal Ltd | Wholesale & retail | 2024 |
| Twisted Music Limited | Information & communication | 2001 |
| Twisted Records Limited | Information & communication | 1996 |
| TWM Management Consultants Limited | Professional & scientific | 2012 |
| Two and a Half Fields Limited | Agriculture & fishing | 2021 |
| Two Buffers Ltd | Information & communication | 2017 |
| Two-Bry Properties Ltd | Real estate | 2024 |
| TWT Electronics Ltd | Wholesale & retail | 2022 |
| TWT Group Ltd | Construction | 2015 |
| TWT Media Ltd | Information & communication | 2022 |
| Tychrys Limited | Professional & scientific | 2018 |
| Tynashe Ltd | Health & social care | 2015 |
| Typhoon Packaging Systems Limited | Administrative & support | 2007 |
| Typically Italian Ltd | Administrative & support | 1999 |
| Typically Spain Limited | Administrative & support | 2014 |
| Tyranrite Limited | Information & communication | 2019 |
| Tyreaid Ltd | Wholesale & retail | 2024 |
| Tyrellies Sanctuary Limited | Hospitality | 2024 |
| Tyres Centre Limited | Wholesale & retail | 2026 |
| Tyresolve Ltd | Wholesale & retail | 2021 |
| Tyretechs Mobile Limited | Other services | 2024 |
| TYS Properties Limited | Real estate | 2018 |
| TYS Retail Ltd | Wholesale & retail | 2013 |
| Tysdale Developments Ltd | Real estate | 2025 |
| Tystudio Ltd | Arts & recreation | 2019 |
| Tyto Developments Limited | Construction | 2021 |
| Tzaman Ltd | Health & social care | 2023 |
| TZO Services Ltd | Administrative & support | 2017 |
| U & W Properties Ltd | Real estate | 2020 |
| U & W Tree Surgery Ltd | Agriculture & fishing | 2025 |
| U Gutka Ltd | Hospitality | 2018 |
| U&U Motor Vehicles Ltd | Wholesale & retail | 2024 |
| U.D. Wholesale Ltd | Wholesale & retail | 2025 |
| U.K. Medical Consultants Ltd | Health & social care | 2024 |
| U4BA Media Ltd | Information & communication | 2012 |
| Ucchanges Ltd | Wholesale & retail | 2022 |
| Udacha Games Limited | Information & communication | 2015 |
| Ugegbe Oyibom UK Ltd | Health & social care | 2024 |
| UJT Global Ltd | Transport & logistics | 2025 |
| UK & Europe Pakistan Forum for Business Limited | Administrative & support | 2019 |
| UK Ak-Trans Ltd | Transport & logistics | 2025 |
| UK AS Investments Ltd | Real estate | 2019 |
| UK Bari Ltd | Transport & logistics | 2024 |
| UK Car Repair Ltd | Wholesale & retail | 2018 |
| UK Car World Ltd | Wholesale & retail | 2025 |
| UK Central Transport Ltd | Transport & logistics | 2018 |
| UK Cobra Ltd | Wholesale & retail | 2025 |
| UK Cold Store Construction Limited | Construction | 2010 |
| UK Dar-Max Transport Ltd | Transport & logistics | 2022 |
| UK DR Trans Ltd | Transport & logistics | 2022 |
| UK Dstransport Ltd | Transport & logistics | 2026 |
| UK Duca Trans Ltd | Transport & logistics | 2020 |
| UK Dynamix Ltd | Health & social care | 2009 |
| UK Equity Ltd | Real estate | 2017 |
| UK FB Trans Ltd | Transport & logistics | 2026 |
| UK Fengheng Machinery & Electronics Co., Ltd. | Manufacturing | 2025 |
| UK Food Peterborough Ltd | Wholesale & retail | 2025 |
| UK Franchise Limited | Manufacturing | 2014 |
| UK Garden & Pet Products - Export Specialists Ltd | Wholesale & retail | 2017 |
| UK GT Trans Ltd | Transport & logistics | 2026 |
| UK Gym Equipment Ltd | Wholesale & retail | 2014 |
| UK Health Care Agency Ltd | Professional & scientific | 2021 |
| UK Ice Sports Ltd | Wholesale & retail | 2023 |
| UK Immigration and Visa Services Ltd | Professional & scientific | 2022 |
| UK Imports Ltd | Construction | 2019 |
| UK Investment for Asset and Financial Management Limited | Real estate | 2006 |
| UK Itrans Ltd | Transport & logistics | 2026 |
| UK Jarotrans Ltd | Transport & logistics | 2026 |
| UK Kebab & Pizza Ltd | Hospitality | 2016 |
| UK Luna Ltd | Transport & logistics | 2019 |
| UK Mail Ltd | Transport & logistics | 2015 |
| UK Mazur Ltd | Transport & logistics | 2024 |
| UK Mir-Trans Ltd | Transport & logistics | 2024 |
| UK Miro Ltd | Transport & logistics | 2025 |
| UK Motor Glass Ltd | Wholesale & retail | 2022 |
| UK Motors Ltd | Wholesale & retail | 2022 |
| UK OLE Limited | Professional & scientific | 2022 |
| UK Pet Taxi Cambridgeshire Ltd | Transport & logistics | 2026 |
| UK Plumbing & DIY Ltd | Wholesale & retail | 2021 |
| UK Political Insight Ltd | Professional & scientific | 2020 |
| UK Property Invest Limited | Construction | 2018 |
| UK Refrigeration & Air Conditioning Ltd. | Construction | 2001 |
| UK Rita-Group Ltd | Transport & logistics | 2026 |
| UK Rock&Road Ltd | Transport & logistics | 2025 |
| UK Seaweed Ltd | Agriculture & fishing | 2025 |
| UK Secondhand Furniture Limited | Wholesale & retail | 2026 |
| UK Sigline Ltd | Other services | 2016 |
| UK Simple Accounting Ltd | Professional & scientific | 2015 |
| UK Single Lets Ltd | Construction | 2018 |
| UK SME Accountants Ltd | Professional & scientific | 2024 |
| UK Supplement Manufacturer Limited | Other services | 2024 |
| UK Swift Care Agency Ltd | Administrative & support | 2023 |
| UK Swimming Science Institut. Ltd | Professional & scientific | 2025 |
| UK TRI Tranport Ltd | Construction | 2026 |
| UK Tyre & Services Ltd | Wholesale & retail | 2019 |