| Summer Capsule Corp Ltd | Health & social care | 2023 |
| Sundiata Global Mediata Ltd | Information & communication | 2014 |
| Sunny Property VN Ltd | Real estate | 2026 |
| Sunnyhill Service's Limited | Administrative & support | 2024 |
| Sunshine HR Limited | Professional & scientific | 2014 |
| Sunship Solutions Ltd | Professional & scientific | 2025 |
| Super Marketing Ltd | Professional & scientific | 2017 |
| Super Vehicle Management Ltd | Administrative & support | 2025 |
| Supreme Edge Solutions Ltd | Information & communication | 2025 |
| Supreme Staffing Ltd | Transport & logistics | 2025 |
| Supreme Waste Solutions Limited | Water & waste | 2025 |
| Supremeslush Ltd | Manufacturing | 2019 |
| Surrey Guard Ltd | Administrative & support | 2025 |
| Surya & Co Limited | Professional & scientific | 2008 |
| Susdane Ltd | Professional & scientific | 2016 |
| Suturerite Limited | Wholesale & retail | 2025 |
| Swaavi Properties Ltd | Real estate | 2022 |
| Sweet & Spicy Food Store Limited | Wholesale & retail | 2020 |
| Swift Sourcing Solutions Limited | Real estate | 2025 |
| Swift Wings Aviation Ltd | Administrative & support | 2024 |
| Swiftp Ltd | Wholesale & retail | 2024 |
| Swyft Stays Ltd | Hospitality | 2024 |
| Syed Builders Ltd | Construction | 2020 |
| Syedwindowcleaner Service Ltd | Administrative & support | 2025 |
| SYM Technologies Ltd | Information & communication | 2020 |
| Synergize Aspirationz Limited | Health & social care | 2019 |
| Sysdata Technologies Ltd | Information & communication | 2021 |
| System Design and Implementation Solutions Limited | Professional & scientific | 2016 |
| T & D Watson Limited | Hospitality | 2008 |
| T and AA Ltd | Wholesale & retail | 2019 |
| T Parvez Limited | Health & social care | 2007 |
| T&T Enterprise Group Ltd | Wholesale & retail | 2023 |
| T-Neb Services Ltd | Construction | 2026 |
| T.M.S Homes Limited | Households | 2018 |
| Taanalytics Ltd | Professional & scientific | 2023 |
| Tabor Ltd | Wholesale & retail | 2019 |
| Taha IT Consulting Ltd | Information & communication | 2012 |
| Taimide Construction and Consultant Limited | Construction | 2024 |
| Tako Arch. Limited | Professional & scientific | 2024 |
| Takyiwah Ltd | Health & social care | 2013 |
| Tamarisk Trading Corporation UK Limited | Wholesale & retail | 2023 |
| Tamilaga Thalpathy Kazhagam UK Support Limited | Extraterritorial | 2024 |
| Tammar Group Ltd | Wholesale & retail | 2025 |
| Tandoori Corner Ltd | Hospitality | 2018 |
| Tanz Industries Ltd | Wholesale & retail | 2021 |
| Tap-Id Ltd | Other services | 2018 |
| Tara House Management Ltd | Real estate | 2014 |
| Tasgyem Services Limited | Other services | 2018 |
| Taste of Desi Limited | Hospitality | 2025 |
| Taste of Home Ltd | Hospitality | 2024 |
| Taste Tropics Limited | Hospitality | 2024 |
| Tawiah Health Ltd | Health & social care | 2012 |
| Tawiah Physio Limited | Health & social care | 2022 |
| Tax Executive Ltd | Administrative & support | 2017 |
| Tax Returns & Solutions Limited | Administrative & support | 2010 |
| Tayab Alisha Ltd | Transport & logistics | 2023 |
| Teal 222 Ltd | Professional & scientific | 2023 |
| Tech HQ Solutions Ltd | Information & communication | 2024 |
| Tech Innovative Solutions Limited | Information & communication | 2024 |
| Tech Organisers Ltd | Wholesale & retail | 2025 |
| Tech Sollutions Ltd | Information & communication | 2021 |
| Technical Plumbing London Limited | Construction | 2026 |
| Techzoone Ltd | Wholesale & retail | 2025 |
| TEE Nail & Beauty Ltd | Other services | 2026 |
| TEE POT African Grubs Ltd | Hospitality | 2021 |
| TEE the Jeweller Ltd | Wholesale & retail | 2020 |
| Tees and Taste Foods Limited | Manufacturing | 2026 |
| Teggz Kitchen Ltd | Hospitality | 2023 |
| Tenoys Services Limited | Real estate | 2024 |
| Tenzyuk Ltd | Wholesale & retail | 2026 |
| Terraart Ltd | Construction | 2024 |
| Terras DO Demo Cafe & Deli Ltd | Hospitality | 2025 |
| Testgrab Ltd | Information & communication | 2026 |
| Tevin Care Solutions Ltd | Health & social care | 2020 |
| TGN Motors Ltd | Wholesale & retail | 2018 |
| Tha-One Advertising and Management Limited | Professional & scientific | 2013 |
| THE 7TH Member Limited | Wholesale & retail | 2021 |
| THE Accessorack Company Ltd | Manufacturing | 2011 |
| THE Arête Concierge Ltd | Other services | 2024 |
| THE Beverage House Limited | Wholesale & retail | 2023 |
| THE Blow Lounge Ltd | Other services | 2026 |
| THE Care Expert Ltd | Extraterritorial | 2010 |
| THE College London Ltd | Education | 2019 |
| THE Damp Company (UK) Ltd | Construction | 2011 |
| THE Davison Band Africa Ltd | Information & communication | 2015 |
| THE Divy Limited | Information & communication | 2022 |
| THE Dixons Limited | Other services | 2001 |
| THE Eukairia Group Limited | Wholesale & retail | 2025 |
| THE Exchange Project Ltd | Administrative & support | 2023 |
| THE Hoffmann Group Limited | Professional & scientific | 2025 |
| THE Jaunties Europe Ltd | Real estate | 2016 |
| THE Live Creations CIC | Education | 2026 |
| THE London Management Services (UK) Limited | Real estate | 2002 |
| THE Lumine Collection Ltd | Manufacturing | 2025 |
| THE Manor Trust | Education | 2011 |
| THE Many Mansions and Rooms Property Investments Ltd | Hospitality | 2020 |
| THE Mews (CR7) RTM Company Limited | Households | 2024 |
| THE Nations Movers Ltd | Transport & logistics | 2020 |
| THE New Pan-African Movement CIC | Education | 2021 |
| THE NH Way Ltd | Health & social care | 2012 |