| THE Hoist People Ltd | Administrative & support | 2016 |
| THE Hub Kitchen & Bar Ltd | Hospitality | 2026 |
| THE Lakes Cafe Ltd | Hospitality | 2024 |
| THE Light Care Consultancy Limited | Health & social care | 2017 |
| THE Lofty OWL Property Company Ltd | Construction | 2021 |
| THE Love Network Community Interest Company | Hospitality | 2025 |
| THE Maltings CHR Management Ltd | Households | 2003 |
| THE Market Hall Company Limited | Extraterritorial | 1995 |
| THE Merry Training Company Ltd | Other services | 2015 |
| THE Mighty Monk Ltd | Hospitality | 2025 |
| THE Mineral World Scratch Patch Limited | Wholesale & retail | 1994 |
| THE Monthly Advertiser Limited | Manufacturing | 2003 |
| THE Old Chestnut Limited | Hospitality | 2023 |
| THE Old Vicarage (Canning Road) Limited | Households | 2003 |
| THE Outcry Ensemble | Arts & recreation | 2015 |
| THE Outwood Dog and Duck Ltd | Hospitality | 2015 |
| THE Perfume Society | Other services | 2013 |
| THE Pharmaceutical Marketing Society Limited | Other services | 2012 |
| THE Picked Emporium Ltd | Wholesale & retail | 2025 |
| THE Pines (Worth) Limited | Households | 2002 |
| THE Plan Group Limited | Financial services | 2000 |
| THE Planning Business LLP | | 2002 |
| THE Pool Collective Ltd | Professional & scientific | 2024 |
| THE Purple Coffee Co Ltd | Manufacturing | 2006 |
| THE Redeemed Christian Church of GOD (Rccg) King's Tower Assembly | Other services | 2021 |
| THE Redhill Bowling Club Limited | Arts & recreation | 2010 |
| THE Roadrunners Group Limited | Transport & logistics | 2020 |
| THE Robot Lawnmower Company Ltd | Wholesale & retail | 2022 |
| THE School Team Limited | Extraterritorial | 2020 |
| THE Slice Limited | Real estate | 1993 |
| THE Social Table Ltd | Hospitality | 2020 |
| THE Spark Consultancy Ltd | Professional & scientific | 2010 |
| THE Stately Hound Ltd | Wholesale & retail | 2012 |
| THE Story School Limited | Education | 2025 |
| THE Surrey Embroidery Co. Limited | Manufacturing | 1977 |
| THE Symbiotic Partnership Ltd | Professional & scientific | 2017 |
| THE Tiling Company (Southern) Limited | Construction | 2008 |
| THE Vault Automotive Group Ltd | Other services | 2026 |
| THE Wainwrights Management Limited | Households | 2015 |
| THE Woodsman Project Ltd | Agriculture & fishing | 2022 |
| Theradex (Europe) Limited | Professional & scientific | 1992 |
| Theronix Ltd | Information & communication | 2025 |
| Think Like a Boss Ltd | Professional & scientific | 2020 |
| Think Property Investments Limited | Real estate | 2013 |
| Thinkblue Ltd | Professional & scientific | 2024 |
| Thinklaser Holding Limited | Financial services | 2018 |
| Thinklaser Limited | Manufacturing | 2002 |
| THINKWILD45 Ltd | Administrative & support | 2018 |
| Thira Logistics Ltd | Transport & logistics | 2025 |
| Third Culmington Management Company (Ealing) Limited | Households | 1984 |
| Thirty Bina Management Limited | Households | 1990 |
| Thisisash Ltd | Information & communication | 2019 |
| Thornton Group Limited | Construction | 2015 |
| Three Arches Park Limited | Households | 1988 |
| Three Bridges Road Management Company Limited | Households | 2007 |
| Three Central Ltd | Administrative & support | 2012 |
| Three Pubco Ltd | Hospitality | 2024 |
| Threlle Ltd | Construction | 2019 |
| Tickety-Boo Properties Limited | Construction | 2003 |
| Ticktocktimetoplay Ltd | Wholesale & retail | 2024 |
| Tiddlywinks Nurseries Limited | Education | 1996 |
| Tidey Construction Ltd | Construction | 2019 |
| Tikaragrafik Ltd | Professional & scientific | 2024 |
| Tillbrook Estates Limited | Construction | 1992 |
| Tillbrook Management Services Limited | Administrative & support | 2020 |
| Tillbrook Poland Limited | Administrative & support | 1994 |
| Tilt Visuals Ltd | Professional & scientific | 2026 |
| Tiltwood Homes Limited | Construction | 2020 |
| TIM Craig Limited | Construction | 2016 |
| Time/Image Online Ltd | Information & communication | 2011 |
| Timeless Alliance LLP | | 2025 |
| Timing Chain Gatwick Ltd | Wholesale & retail | 2022 |
| Timothy Properties Ltd | Households | 2022 |
| TIN Tutoring Ltd | Education | 2020 |
| Tinius Olsen Limited | Manufacturing | 1970 |
| Tinya-Mat Limited | Public administration | 2024 |
| Titan Accountancy UK Ltd | Professional & scientific | 2018 |
| Titan Executive Ltd | Administrative & support | 2009 |
| TITHE10 Ltd | Wholesale & retail | 2022 |
| TJH Group Ltd | Construction | 2023 |
| Tl&J Ltd | Wholesale & retail | 2020 |
| TLB Consult Ltd | Administrative & support | 2024 |
| TLM Media Ltd | Information & communication | 2009 |
| TLM Restaurants Ltd | Hospitality | 2008 |
| TLP People Limited | Information & communication | 1997 |
| TLP Recruit Limited | Information & communication | 1996 |
| TLP Technology Limited | Information & communication | 2026 |
| TLP Workspace Limited | Information & communication | 1989 |
| Tmgs Grounds Maintenance Limited | Administrative & support | 2011 |
| TMK Cleancaretec Ltd | Administrative & support | 2024 |
| TMN Merchants Limited | Wholesale & retail | 2022 |
| Tollgate Court Residents Association Limited | Other services | 1983 |
| TOM FOX Ltd | Wholesale & retail | 2011 |
| Tomas Property Investments Ltd | Real estate | 1996 |
| Tombini Simone Limited | Wholesale & retail | 2025 |
| Toolagen Limited | Information & communication | 2008 |
| Top Choice Redhill Ltd | Wholesale & retail | 2024 |
| Topcar Gatwick Ltd | Transport & logistics | 2023 |
| Topupmeters Limited | Information & communication | 2018 |
| TOR Training CIC | Arts & recreation | 2023 |