| Temiz Yemek Limited | Hospitality | 2021 |
| Temple & Boon Ltd | Information & communication | 2026 |
| Templedata Ltd | Construction | 2023 |
| Templegate Retail Solutions Limited | Professional & scientific | 2014 |
| Tempo Logix Technologies Limited | Information & communication | 2024 |
| Tempo Motors Limited | Wholesale & retail | 2026 |
| TEN10 Plumbing & Heating Ltd | Construction | 2026 |
| Tendercare Health Initiative UK CIC | Health & social care | 2013 |
| Tens Cuts & Stuff Ltd | Other services | 2019 |
| Tensid UK Ltd | Wholesale & retail | 1988 |
| Teoman Limited | Wholesale & retail | 2020 |
| Teona Limited | Hospitality | 2017 |
| Terapi Londra Ltd | Health & social care | 2024 |
| Terbas Ltd | Other services | 2026 |
| Terkivatan Limited | Real estate | 2023 |
| Terlemez Limited | Professional & scientific | 2020 |
| Terra Guard Ltd | Professional & scientific | 2021 |
| Terra Trade International Ltd | Wholesale & retail | 2023 |
| Terrafirma Contracts Ltd | Construction | 2017 |
| Teseo Consulting Ltd | Financial services | 2025 |
| Tesoro Limited | Real estate | 2022 |
| Tessa Rebecca Limited | Professional & scientific | 2018 |
| Tessura Ltd | Wholesale & retail | 2024 |
| Tetchanna Services Ltd | Real estate | 2024 |
| Tewkesbury Nails Limited | Other services | 2021 |
| Texas Nails MG Limited | Other services | 2023 |
| Textpert Ltd | Information & communication | 2014 |
| TFC Burnt Oak Limited | Wholesale & retail | 2010 |
| TFC Camberwell Limited | Wholesale & retail | 2007 |
| TFC Camberwell Supermarket Limited | Wholesale & retail | 2021 |
| TFC Croydon Limited | Wholesale & retail | 1999 |
| TFC Dalston Limited | Wholesale & retail | 1999 |
| TFC Holdings London Limited | Financial services | 2011 |
| TFC Waltham Cross Limited | Wholesale & retail | 2005 |
| TFC Welling Limited | Wholesale & retail | 2005 |
| TFT Media Ltd | Information & communication | 2022 |
| TGC Housing Limited | Real estate | 2025 |
| TGH Construction Ltd | Construction | 2018 |
| TGH Investments Ltd | Real estate | 2020 |
| TGM Music Ltd | Arts & recreation | 2024 |
| TGM Partnership Ltd | Construction | 2019 |
| TGS Construction Ltd | Construction | 2020 |
| Thai Massage Therapy Ltd | Health & social care | 2025 |
| Thames Building Construction Limited | Construction | 2026 |
| Thames Waste Management Ltd | Water & waste | 2023 |
| Thandie Specialist Services Limited | Health & social care | 2013 |
| Thane Gateway Limited | Real estate | 2020 |
| Thang Tuyen Limited | Other services | 2018 |
| Thanu Trading Ltd | Hospitality | 2019 |
| That Maintenance Company Limited | Real estate | 2010 |
| That’S My Jamm Ltd | Professional & scientific | 2023 |
| THE 1874 Group Limited | Administrative & support | 2017 |
| THE Accommodating Company Partnership Limited | Real estate | 2010 |
| THE Accounting LAB Limited | Professional & scientific | 2023 |
| THE Adnan Jaffery Academy Trust | Education | 2014 |
| THE Algarve Restaurant Ltd | Hospitality | 2019 |
| THE Ambit Group London Limited | Administrative & support | 2011 |
| THE ANH Nguyen Limited | Other services | 2021 |
| THE Art Design London Ltd | Professional & scientific | 2019 |
| THE Art of Cleaning Ltd | Administrative & support | 2019 |
| THE Arts Imporium Limited | Arts & recreation | 2015 |
| THE Ascot Restaurant Limited | Hospitality | 2024 |
| THE Barber Room London Limited | Other services | 2013 |
| THE Barrow Boys Pubco Limited | Hospitality | 2024 |
| THE Baudelaire Society and Limouse Foundation Limited | Arts & recreation | 1994 |
| THE BC Residence Ltd | Real estate | 2025 |
| THE Bearded Lady Ltd | Professional & scientific | 2026 |
| THE Bees Grocery Ltd | Wholesale & retail | 2016 |
| THE Bespoke Hand Painted Kitchen Company Limited | Construction | 2025 |
| THE Best Decorators Ltd | Construction | 2020 |
| THE Best's Wholesale Plants Ltd | Wholesale & retail | 2024 |
| THE Big Machine Ltd | Other services | 2022 |
| THE Bike Shop Ltd | Wholesale & retail | 2012 |
| THE Body Engine Ltd | Wholesale & retail | 2024 |
| THE Body Place (BHP) Ltd | Other services | 2012 |
| THE Brew Quarter Cafe Ltd | Hospitality | 2022 |
| THE Bridge Global Education Ltd | Education | 2026 |
| THE Burntfarm Ltd | Real estate | 2018 |
| THE CBD Consultantcy UK Ltd | Wholesale & retail | 2019 |
| THE CEO Mind and Doctor Method Ltd | Information & communication | 2026 |
| THE Cheesebread Company Limited | Hospitality | 2022 |
| THE Chilean Premier Foods Limited | Wholesale & retail | 2023 |
| THE Chinthurst Group Ltd | Construction | 2020 |
| THE Chop Shop Online Ltd | Information & communication | 2026 |
| THE Chris Harmanda Foundation | Other services | 2018 |
| THE Clean Spot Ltd | Administrative & support | 2023 |
| THE Collectors LAB Ltd | Wholesale & retail | 2026 |
| THE Colon Club Limited | Health & social care | 2014 |
| THE Coping Centre Ltd | Health & social care | 2021 |
| THE Cotswold Management Ltd | Real estate | 2026 |
| THE Cotswolds Group Ltd | Financial services | 2026 |
| THE Crbn Fbre Comp Ltd | Manufacturing | 2019 |
| THE CUT Waterloo Ltd | Other services | 2020 |
| THE Cutting Edge Barbers London Ltd | Other services | 2022 |
| THE DEN Events Limited | Arts & recreation | 2016 |
| THE Dental Virtual Assistant Limited | Administrative & support | 2020 |
| THE Depa-Ture Club Ltd | Information & communication | 2026 |
| THE Detail Alchemists Ltd | Administrative & support | 2025 |
| THE Dried Natural Ltd | Wholesale & retail | 2020 |
| THE Ealing Broadway Ltd | Hospitality | 2026 |