| Texo Scaffolding and Construction Limited | Construction | 2009 |
| Textilian Limited | Manufacturing | 2017 |
| TF & Daughters Limited | Real estate | 2025 |
| TF Locums Ltd | Professional & scientific | 2026 |
| TFR Elite Capital Limited | Administrative & support | 2026 |
| TFR Elite London Limited | Administrative & support | 2026 |
| TFS Global Ltd | Financial services | 2018 |
| TFS Real Estates Ltd | Real estate | 2022 |
| Tftc Euro Ltd | Wholesale & retail | 2018 |
| TG Data Cabling Ltd | Construction | 2022 |
| TGB Property Developement Limited | Real estate | 2017 |
| TGL Athleisure Ltd | Wholesale & retail | 2025 |
| TGR Accounting Ltd | Professional & scientific | 2015 |
| TGS Roofing Ltd | Construction | 2025 |
| TH Consultants Limited | Professional & scientific | 2018 |
| Thaayakam Ltd | Information & communication | 2020 |
| Thajal Engineering Ltd | Construction | 2016 |
| Thajinvestments Limited | Wholesale & retail | 2025 |
| Thali House Ltd | Hospitality | 2026 |
| Thambi Estates Limited | Real estate | 2021 |
| Thames Motors Limited | Wholesale & retail | 2017 |
| Thames Party Boats (Essex) Ltd | Hospitality | 2025 |
| Thames ROW Limited | Information & communication | 2023 |
| Thames Trades Ltd | Construction | 2020 |
| Thames Valley Contracts Ltd | Extraterritorial | 2014 |
| Thameside Roofing Ltd | Construction | 2012 |
| Thami Globe Professional Solutions Ltd | Administrative & support | 2025 |
| Thanalakshme Jewellery Limited | Wholesale & retail | 2009 |
| Thandi 11 Limited | Transport & logistics | 2022 |
| Thandi Brothers & SON Ltd | Hospitality | 2018 |
| Thanki Silhouettes Ltd | Wholesale & retail | 2025 |
| Thapper Retail Ltd | Other services | 2024 |
| Thariq Smiles Ltd | Health & social care | 2024 |
| Tharmaja Inparaj Consulting Ltd | Public administration | 2026 |
| Tharmam Centre Ltd | Education | 2021 |
| Tharsana Limited | Information & communication | 2012 |
| Thas WAH Ltd | Real estate | 2026 |
| Thasha Service Ltd | Wholesale & retail | 2007 |
| Thatcham PUB Co Ltd | Hospitality | 2018 |
| Thava Properties Ltd | Real estate | 2025 |
| THE 2 Physios Limited | Health & social care | 2026 |
| THE 6TH AVE Ltd | Real estate | 2024 |
| THE Achievers Care Ltd | Health & social care | 2020 |
| THE Address Collection Limited | Extraterritorial | 2020 |
| THE Aesthetiq Group Ltd | Education | 2025 |
| THE AID Team Ltd | Health & social care | 2016 |
| THE Aisle Experience Ltd | Real estate | 2026 |
| THE Alams (Family) Ltd | Real estate | 2017 |
| THE ALI Centre Limited | Wholesale & retail | 2026 |
| THE Alma Edit London Ltd | Wholesale & retail | 2025 |
| THE Anti-Ageing Clinic Limited | Health & social care | 2004 |
| THE AR Business Group Holdings Ltd | Financial services | 2021 |
| THE Arab Educational and Cultural Forum | Education | 1989 |
| THE ARK Clean Co. Ltd | Administrative & support | 2026 |
| THE Asset People Group PLC | Financial services | 2017 |
| THE Association for the Treatment of Sexual Addiction and Compulsivity Limited | Health & social care | 2010 |
| THE Auctioneer Limited | Wholesale & retail | 2002 |
| THE Axis Store Ltd | Administrative & support | 2020 |
| THE Bakeonomist Ltd | Hospitality | 2022 |
| THE Barber Shop Greenlane Limited | Other services | 2012 |
| THE Bardoli Muslim Welfare Society UK | Health & social care | 2011 |
| THE Basement Design Practice Limited | Extraterritorial | 2012 |
| THE BD Aggregate Ltd | Wholesale & retail | 2024 |
| THE Beauty Place Ltd | Other services | 2020 |
| THE Better Handyman Ltd | Construction | 2021 |
| THE Big Lime Ltd | Wholesale & retail | 2024 |
| THE Black Book Collection Limited | Manufacturing | 2025 |
| THE Blinds Store Limited | Wholesale & retail | 2009 |
| THE Boiler Exchange London Ltd | Construction | 2025 |
| THE Boss Hub Limited | Professional & scientific | 2017 |
| THE Bottle Company Ltd | Wholesale & retail | 2026 |
| THE Bountiful One Ltd | Wholesale & retail | 2024 |
| THE Bounty Register Ltd | Information & communication | 2021 |
| THE Brand Communication Agency Ltd | Professional & scientific | 2018 |
| THE Bridge Distributor Limited Partnership | | 2018 |
| THE Bridge Riverside Therapeutic School Ltd | Health & social care | 2026 |
| THE Bridge Within CIC | Education | 2026 |
| THE Briefing Room UK Ltd | Professional & scientific | 2026 |
| THE Britsoft Corporation Ltd | Information & communication | 2021 |
| THE Brother's Painting and Decorations Ltd | Construction | 2025 |
| THE Brothers Gym Ltd | Professional & scientific | 2019 |
| THE Building Bros Ltd | Construction | 2025 |
| THE Business Success Academy Ltd | Education | 2017 |
| THE Buzz Talent Group Limited | Administrative & support | 2019 |
| THE Cake Stop London Ltd | Manufacturing | 2024 |
| THE Cakebox Northampton Limited | Wholesale & retail | 2017 |
| THE Car Connoisseurs Ltd | Wholesale & retail | 2021 |
| THE Car Doctors (UK) Limited | Wholesale & retail | 2009 |
| THE Car Group UK 2020 Ltd | Wholesale & retail | 2020 |
| THE Car Guyss Ltd | Wholesale & retail | 2019 |
| THE Carpet Group Ltd | Wholesale & retail | 2024 |
| THE Casket Cooperation Ltd | Other services | 2021 |
| THE Cedars Investments Limited | Real estate | 2022 |
| THE Chigwell Decorating Company Ltd | Administrative & support | 2017 |
| THE City Constructions (UK) Ltd | Construction | 2012 |
| THE City Property and Management Services Limited | Real estate | 2016 |
| THE Clear Touch Solutions Limited | Transport & logistics | 2025 |
| THE Clowns' Gallery Limited | Arts & recreation | 1997 |
| THE Community Hub Residential and Support Services Ltd | Health & social care | 2021 |
| THE Concrete Supply Network Ltd | Construction | 2022 |