| Tashvi Collective Limited | Wholesale & retail | 2026 |
| Tataki London Ltd | Hospitality | 2025 |
| Tataki Ltd | Hospitality | 2025 |
| Tatva Consultancy Ltd | Information & communication | 2010 |
| Tax Consultants Limited | Administrative & support | 2024 |
| Tax Focus Limited | Professional & scientific | 2003 |
| Tax Network 2 Limited | Professional & scientific | 2015 |
| Tax Network London Ltd | Professional & scientific | 2022 |
| Tax Network NWL Ltd | Professional & scientific | 2025 |
| Taxi Driver Andrei Ltd | Transport & logistics | 2025 |
| Taylor Charles Limited | Construction | 2002 |
| Taylor Made Sandwich Bar Ltd | Hospitality | 2025 |
| Taylor Mountford Media Ltd | Professional & scientific | 2025 |
| Tayt London Ltd | Wholesale & retail | 2021 |
| TCT Systems Limited | Information & communication | 2012 |
| TD Clothing Limited | Wholesale & retail | 2025 |
| TDM Holdings Limited | Real estate | 2022 |
| TDM Homes Limited | Real estate | 2017 |
| TDM International Limited | Transport & logistics | 2001 |
| Teaching Tree Academy Ltd | Education | 2026 |
| Teaco Trustees Limited | Professional & scientific | 2013 |
| Tecarc Limited | Administrative & support | 2008 |
| TECH-FOR-YOU-03 Ltd | Wholesale & retail | 2020 |
| Techgods Limited | Wholesale & retail | 2016 |
| Techniblinds Limited | Manufacturing | 1983 |
| Techniqui Global Services Ltd | Professional & scientific | 2024 |
| Techops Consulting Ltd | Information & communication | 2019 |
| Techshila Ltd | Information & communication | 2026 |
| Tejas Patel Limited | Administrative & support | 2009 |
| TEK Group Solutions Limited | Information & communication | 2021 |
| Tekreeti Limited | Health & social care | 2023 |
| Temping & Outsourcing Limited | Administrative & support | 2022 |
| Templewood Developments Limited | Real estate | 2015 |
| Tend Clean Ltd | Wholesale & retail | 2021 |
| Tenstoke Group Ltd | Real estate | 2021 |
| Terra Link Properties Ltd | Real estate | 2023 |
| Terramara Group Limited | Agriculture & fishing | 2025 |
| Testing & QA Consulting Limited | Information & communication | 2024 |
| TGG Contracts Limited | Construction | 2015 |
| TGS Homes Limited | Construction | 2025 |
| Thai Kang Ltd | Health & social care | 2014 |
| Thakkar Consulting Ltd | Professional & scientific | 2025 |
| Thakkar Specialist Services Ltd | Construction | 2011 |
| Thames Mill Limited | Wholesale & retail | 2022 |
| Thames Trucking Limited | Transport & logistics | 2025 |
| Thamesmere Limited | Construction | 2025 |
| THE Bamboo Base Ltd | Wholesale & retail | 2019 |
| THE Beachyhat Limited | Manufacturing | 2015 |
| THE Brampton Group Limited | Professional & scientific | 2015 |
| THE Brewery Limited | Manufacturing | 2015 |
| THE Chase Property Ltd | Real estate | 2019 |
| THE Clay Oven Group Limited | Hospitality | 2017 |
| THE Clay Oven Investments Limited | Real estate | 2020 |
| THE Clay Oven UK Limited | Hospitality | 1999 |
| THE Cotswold House Hotel Limited | Hospitality | 1999 |
| THE Country Garden Workshop Limited | Arts & recreation | 2017 |
| THE Doctor's Lounge Limited | Health & social care | 2022 |
| THE EGG Empire Limited | Arts & recreation | 2026 |
| THE Elms (Rickmansworth Road) Residents Company Ltd. | Administrative & support | 1996 |
| THE Farm Management and Admin Limited | Hospitality | 2024 |
| THE Farm Recruitment Limited | Administrative & support | 2024 |
| THE Farm Restaurant and Bar Limited | Hospitality | 2022 |
| THE Feathers Properties Ltd | Real estate | 2013 |
| THE Galley Restaurant (Woodbridge) Limited | Hospitality | 2026 |
| THE Grange Country House Ltd | Other services | 2016 |
| THE Granite Shop Ltd | Professional & scientific | 2025 |
| THE Green MEN Limited | Administrative & support | 2014 |
| THE Greenheys Company Ltd | Real estate | 2022 |
| THE Hour Glass Studio Limited | Administrative & support | 2020 |
| THE Iron Clinic London Limited | Health & social care | 2016 |
| THE Jewell ERA Ltd | Wholesale & retail | 2019 |
| THE Knight of Notting Hill Limited | Hospitality | 2023 |
| THE Knightsbridge Door Company Limited | Wholesale & retail | 2018 |
| THE Linear Group Limited | Real estate | 2018 |
| THE Lion Family Partnership LLP | | 2023 |
| THE Little Lens Ltd | Professional & scientific | 2025 |
| THE Little Picture House Limited | Information & communication | 1998 |
| THE London HIP Clinic Limited | Health & social care | 2007 |
| THE Luxury Event Company Limited | Hospitality | 2025 |
| THE Luxury Picnic Company Limited | Hospitality | 2020 |
| THE Mann Sisters LLP | | 2010 |
| THE Manor Hotel Limited | Hospitality | 1999 |
| THE Method Daisy Limited | Health & social care | 2021 |
| THE Michael Sobell Hospice Charity | Health & social care | 1998 |
| THE Midhurst Gallery Limited | Other services | 2009 |
| THE Northwood and Pinner Liberal Synagogue | Other services | 2014 |
| THE Open Compass Ltd | Professional & scientific | 2025 |
| THE Optical Mentor Ltd | Professional & scientific | 2024 |
| THE Orchid Nails PVT Ltd | Other services | 2025 |
| THE Parsi Food Company Ltd | Manufacturing | 2024 |
| THE Pasta Bowl Limited | Hospitality | 1996 |
| THE Picture Car Company Limited | Wholesale & retail | 2013 |
| THE Purple Kitchen Company Limited | Arts & recreation | 2000 |
| THE Quality Analysis Consultancy Limited | Information & communication | 2017 |
| THE Redling Drive Management Company Limited | Households | 2019 |
| THE Rockeries Ltd | Households | 2021 |
| THE Rooster Limited | Professional & scientific | 2002 |
| THE Sayani Group Ltd | Hospitality | 2024 |
| THE Science of Wellness Limited | Other services | 2020 |
| THE Short Answer Limited | Extraterritorial | 2018 |