| THE Social Hotline Ltd | Other services | 2024 |
| THE Social Traders Limited | Information & communication | 2020 |
| THE Soju Ltd | Hospitality | 2011 |
| THE Sound Boutique Ltd | Arts & recreation | 2011 |
| THE Sparkle HUT Ltd | Wholesale & retail | 2026 |
| THE Spice Edit Ltd | Hospitality | 2025 |
| THE Spice Ministry Limited | Wholesale & retail | 2021 |
| THE Sport MBA Essentials Limited | Other services | 2021 |
| THE Strong Group Ltd | Administrative & support | 2015 |
| THE Style Circle Limited | Wholesale & retail | 2025 |
| THE Sudbury, Wembley and Alperton Youth Project | Health & social care | 2004 |
| THE Sugar Shack Wembley Limited | Manufacturing | 2026 |
| THE Suju Wardrobe Ltd | Manufacturing | 2025 |
| THE Sun Villas Ltd | Professional & scientific | 2012 |
| THE Swift Holding Group Ltd | Financial services | 2024 |
| THE Syndicate Inc Ltd | Other services | 2019 |
| THE Tooth Fairy Dental Company Limited | Health & social care | 2006 |
| THE Tooth Sanctuary Limited | Health & social care | 2022 |
| THE Transformation Cleaning Company Limited | Administrative & support | 2024 |
| THE Tribe Base Ltd | Professional & scientific | 2026 |
| THE UGC London Limited | Professional & scientific | 2024 |
| THE Unique Fragrances Limited | Wholesale & retail | 2025 |
| THE V&A Industry PVT Limited | Wholesale & retail | 2025 |
| THE Valeters London Ltd | Administrative & support | 2019 |
| THE Vegan Burger Co. Limited | Hospitality | 2017 |
| THE Watch Repair and Restoration Ltd | Other services | 2021 |
| THE Watergate Group Limited | Real estate | 2019 |
| THE Wealden Practice Ltd | Health & social care | 2025 |
| THE Wembley Tavern Limited | Hospitality | 2014 |
| THE Whisky Laird Ltd | Wholesale & retail | 2020 |
| THE Willows (Donovan Place) Management Limited | Households | 2017 |
| THE Wing Mirror Company Limited | Wholesale & retail | 2015 |
| THE Woodbury Corporation Limited | Health & social care | 2009 |
| Thealy Limited | Administrative & support | 2025 |
| Theamzdon Limited | Wholesale & retail | 2024 |
| THEBAM213 Ltd | Wholesale & retail | 2022 |
| Thecuteshop Limited | Information & communication | 2004 |
| Thehairclick Ltd | Other services | 2019 |
| Theindiankitchen-Co Limited | Hospitality | 2024 |
| Thekhodiyar Ltd | Wholesale & retail | 2026 |
| Theodore Transport Ltd | Transport & logistics | 2021 |
| Theofili Limited | Financial services | 2018 |
| Theraelite Ltd | Other services | 2025 |
| Thesiya Trade Ltd | Wholesale & retail | 2025 |
| Thesneakerdon Ltd | Wholesale & retail | 2021 |
| Thessal Limited | Transport & logistics | 2021 |
| Thewildbuffalo Ltd | Hospitality | 2021 |
| Thewoodwork Ltd | Information & communication | 2024 |
| Thextockport Ltd | Wholesale & retail | 2025 |
| Thijayanthini Limited | Transport & logistics | 2026 |
| Think H20 CIC | Water & waste | 2025 |
| Think, Learn, Grow Limited | Professional & scientific | 2015 |
| Thirteen Gate City Ltd | Financial services | 2026 |
| This Generation Ministry Ltd | Other services | 2022 |
| This IS Insomnia Limited | Information & communication | 2013 |
| Thishalini Construction Ltd | Construction | 2022 |
| Thistle & Tea Limited | Construction | 2020 |
| Thistle Contractors Limited | Administrative & support | 2014 |
| Tholka Technologies Limited | Information & communication | 2016 |
| Thomas A'Beckett Close Residents Association Limited | Other services | 1972 |
| Thomas Edison Electric Ltd | Energy | 2017 |
| Thornrose Consulting Ltd | Professional & scientific | 2024 |
| Thousandknots Ltd | Manufacturing | 2025 |
| Thread & Form Ltd | Wholesale & retail | 2026 |
| Thread Mill Clothing Ltd | Wholesale & retail | 1995 |
| Threadcraft London Ltd | Wholesale & retail | 2025 |
| Threads & Beyond PVT Ltd | Wholesale & retail | 2020 |
| Three Day Happy Ltd | Wholesale & retail | 2022 |
| Three Trees Healthcare Limited | Health & social care | 2025 |
| Threeboots Ltd. | Wholesale & retail | 2025 |
| Thrive Hills Care Limited | Education | 2025 |
| Tiando Limited | Information & communication | 2024 |
| Tianfengtian Ltd | Wholesale & retail | 2023 |
| TICKETONLY27 Limited | Wholesale & retail | 2026 |
| Ticketwalla Limited | Administrative & support | 2014 |
| Ticu Investment Ltd | Real estate | 2024 |
| Ticulate Ltd | Information & communication | 2023 |
| Tidy Associates Limited | Wholesale & retail | 2009 |
| Tidyhaul Ltd | Water & waste | 2024 |
| TIE Line Productions Limited | Other services | 2010 |
| Tierra Logistics Ltd | Transport & logistics | 2026 |
| Tiers Cross Limited | Real estate | 1995 |
| Tifachi Construction Ltd | Construction | 2019 |
| Tiger Stays Ltd | Real estate | 2025 |
| Tigers-I Solutions Ltd | Information & communication | 2013 |
| Tijara Trading Company Limited | Wholesale & retail | 2014 |
| Tilak Consultancy Limited | Professional & scientific | 2024 |
| Tilina Ltd | Health & social care | 2025 |
| TIM Burrel Hand Car Wash Ltd | Other services | 2013 |
| Time to Shine Windows Ltd | Administrative & support | 2020 |
| Time-Free-Life Ltd | Wholesale & retail | 2019 |
| Timothy James Interiors Limited | Construction | 2011 |
| Tinau Ltd | Real estate | 2025 |
| Tinge Group Ltd | Water & waste | 2019 |
| Tinok Ltd | Hospitality | 2017 |
| Tiny Stars Day Care Ltd | Education | 2011 |
| Tiny Toes Tiny Feet Limited | Health & social care | 2019 |
| TIP Top Houses Limited | Real estate | 2018 |
| Tippity Toes Limited | Professional & scientific | 2005 |
| Tirgo Group Ltd | Real estate | 2024 |