| THE Boring AI Ltd | Information & communication | 2023 |
| THE Brentford Project Residents Association C.I.C. | Extraterritorial | 2025 |
| THE BS Property Group 1 Limited | Real estate | 2021 |
| THE BS Property Group 2 Limited | Real estate | 2025 |
| THE BS Property Group 3 Limited | Real estate | 2025 |
| THE BS Property Group 4 Limited | Real estate | 2026 |
| THE BS Property Group Limited | Real estate | 2018 |
| THE C & L Group of Companies Ltd | Administrative & support | 2009 |
| THE Canine Parlour UK Limited | Agriculture & fishing | 2023 |
| THE Care Alliance CNP Ltd | Professional & scientific | 2023 |
| THE Change Makers Careers Academy Ltd | Education | 2018 |
| THE Cheese Toaster Limited | Wholesale & retail | 2021 |
| THE Cleaning Corp Ltd | Households | 2025 |
| THE CPD Certification Service Limited | Information & communication | 1998 |
| THE Crossways (Hanwell) Limited | Real estate | 2014 |
| THE Design Showroom Ltd | Professional & scientific | 2025 |
| THE Digital Warlock Ltd | Wholesale & retail | 2020 |
| THE Eagle Lion House Ltd | Wholesale & retail | 2025 |
| THE Fair Consulting Ltd | Professional & scientific | 2022 |
| THE Flight Trotters Ltd | Administrative & support | 2016 |
| THE GOL App Ltd | Information & communication | 2025 |
| THE Golf Rooms Group Ltd | Arts & recreation | 2021 |
| THE Great Marco Polo Ltd | Wholesale & retail | 2026 |
| THE Grocery People Limited | Extraterritorial | 2020 |
| THE Haiku Way Ltd | Wholesale & retail | 2020 |
| THE Hideout Coffee House Limited | Manufacturing | 2021 |
| THE Hound Club Ltd | Wholesale & retail | 2022 |
| THE House of DK Ltd | Real estate | 2024 |
| THE House of Prayer Worship Centre Ltd | Other services | 2025 |
| THE Hungry Shelf Ltd | Wholesale & retail | 2025 |
| THE India Travel Company London Ltd | Administrative & support | 2014 |
| THE Inventors Ltd | Education | 2026 |
| THE Jerk Drum Ltd | Hospitality | 2015 |
| THE Join Co Ltd | Construction | 2025 |
| THE Joy of Living Ltd | Wholesale & retail | 2026 |
| THE Leprosy Mission Shop Limited | Wholesale & retail | 1995 |
| THE Licensing Xpert Ltd | Professional & scientific | 2023 |
| THE LIP List Ltd | Information & communication | 2020 |
| THE Manual Review Ltd | Information & communication | 2024 |
| THE Margolis Watch Company Ltd | Other services | 2019 |
| THE Nail Studio (TW) Limited | Other services | 2019 |
| THE Outlierbrand Ltd | Professional & scientific | 2025 |
| THE Polished Touch Ltd | Administrative & support | 2025 |
| THE Power Games Ltd | Wholesale & retail | 2026 |
| THE Rail Coffee Two Ltd | Hospitality | 2023 |
| THE Ratio Interiors Ltd | Professional & scientific | 2020 |
| THE Residency Sports Ltd | Information & communication | 2022 |
| THE Revival Wraps Ltd | Wholesale & retail | 2019 |
| THE Ridgeway Clinic Limited | Health & social care | 2025 |
| THE Said Group Limited | Information & communication | 2016 |
| THE Seamless Collective Ltd | Wholesale & retail | 2023 |
| THE Sport Broadcast Academy Ltd | Information & communication | 2024 |
| THE Translation Consultancy Ltd | Professional & scientific | 2025 |
| THE White Rabbit Consulting Ltd | Information & communication | 2023 |
| THE Wight Bear Ltd | Hospitality | 2020 |
| THE Wongster Limited | Professional & scientific | 2025 |
| THE Woof Woof Village Ltd | Administrative & support | 2025 |
| Thea Services Ltd | Hospitality | 2019 |
| Theagiledatadev Ltd | Information & communication | 2018 |
| Thebigshazbowski Ltd | Information & communication | 2017 |
| Thelanguagestudio Ltd | Education | 2025 |
| Theplumbers.Org (UK) Ltd | Construction | 2015 |
| Therealmarzaa Ltd | Wholesale & retail | 2022 |
| Think N Click Ltd | Wholesale & retail | 2020 |
| Third EYE Solutions Ltd | Information & communication | 2009 |
| Thirteenth Production Limited | Professional & scientific | 2021 |
| This Time NXT Year Ltd | Real estate | 2021 |
| Thkeeper Ltd | Information & communication | 2018 |
| Thomas Jewellery Limited | Wholesale & retail | 2024 |
| Thoroughbred Communications Agency Limited | Professional & scientific | 2018 |
| Thread Again Ltd | Wholesale & retail | 2026 |
| Thredgards Limited | Manufacturing | 1962 |
| Three SIX Nine Infinity Ltd | Wholesale & retail | 2019 |
| Thrive Coaching and Consulting Limited | Professional & scientific | 2020 |
| Thrive Sustainability Collective Limited | Professional & scientific | 2025 |
| Thrive Sustainability Consulting Ltd | Professional & scientific | 2024 |
| Thriving Scholar Ltd | Information & communication | 2017 |
| Throttle Beast Limited | Wholesale & retail | 2019 |
| THS Europe Ltd | Professional & scientific | 2016 |
| Tibertek Advisor Ltd | Wholesale & retail | 2023 |
| Tigin Holdings Ltd | Real estate | 2023 |
| Time Dental Limited | Health & social care | 2019 |
| Time Farnham Ltd | Real estate | 2022 |
| Timon Legends CIC | Other services | 2025 |
| Tiny Technologies Ltd | Information & communication | 2023 |
| Tipple Bar Ltd | Hospitality | 2018 |
| Tissaz Ltd | Wholesale & retail | 2025 |
| TJG Media Limited | Administrative & support | 2016 |
| Tjsn Limited | Financial services | 2026 |
| TK African Food Imports Limited | Wholesale & retail | 2025 |
| TK Lifestyle Lettings Ltd | Real estate | 2019 |
| Tkms Properties Ltd | Real estate | 2025 |
| TKW Films UK Ltd. | Information & communication | 2015 |
| TLC Coaching Ltd | Professional & scientific | 2025 |
| TLC Future Ltd | Wholesale & retail | 2022 |
| Tltl Properties Limited | Real estate | 2021 |
| TNT Health Solutions Limited | Other services | 2018 |
| TO the Manor Born Ltd | Wholesale & retail | 2018 |
| Today Car 24 Limited | Wholesale & retail | 2017 |
| Tokentalk Ltd | Information & communication | 2018 |