| T.C. Repair & Supply Ltd | Manufacturing | 2019 |
| T.H.S. Homes Ltd | Construction | 2004 |
| T3 Asset Management Company Ltd | Real estate | 2021 |
| T3 Property Solutions Ltd | Real estate | 2021 |
| TA Transformations Limited | Information & communication | 2018 |
| Tactically Entertaining Limited | Information & communication | 2025 |
| Tadeenfotos & Sons UK Ltd | Transport & logistics | 2020 |
| Talent IQ Ltd | Administrative & support | 2016 |
| Talentbridge Partners Ltd | Information & communication | 2024 |
| Talk 2 Duck Limited | Information & communication | 2020 |
| Talk Service Management Ltd | Information & communication | 2017 |
| Talkingtraining Limited | Education | 2002 |
| Tall Trees (East Grinstead) Limited | Households | 1962 |
| Taming Mother Nature Limited | Administrative & support | 2011 |
| Tammy's African Food Store. Ltd | Hospitality | 2024 |
| Tanlar Limited | Real estate | 2013 |
| TAP Architecture & Design Limited | Professional & scientific | 2005 |
| TAP Films Limited | Administrative & support | 2013 |
| Tapestry Financial Consultants Limited | Education | 2019 |
| Tarang Ltd | Hospitality | 2019 |
| Target Law Limited | Professional & scientific | 2014 |
| Tashclean Ltd | Administrative & support | 2022 |
| Tasl Ltd | Information & communication | 2024 |
| Tasties Limited | Construction | 2022 |
| Taurai Healthcare Limited | Administrative & support | 2019 |
| Tax and Financial Strategists Limited | Professional & scientific | 2015 |
| Tax Filers Hub Ltd | Administrative & support | 2026 |
| Taxi Plan Insurance Services Limited | Extraterritorial | 2006 |
| Taylor Close (Osterley) Residents Company Limited | Households | 1995 |
| Taylor Lighting Ltd | Construction | 2020 |
| Taylor Software Ltd | Information & communication | 2024 |
| TAYLORMADE1980 Ltd | Wholesale & retail | 2026 |
| Taylors Autos Limited | Wholesale & retail | 1996 |
| Tayscrest LLP | | 2010 |
| TBR116 Ltd | Real estate | 2023 |
| TC Paving Ltd | Construction | 2025 |
| TCS Solutions Ltd | Construction | 2011 |
| TDC Partnership LLP | | 2026 |
| Tea (London) Limited | Information & communication | 2025 |
| Tealk Services Limited | Health & social care | 2001 |
| Team Kher Properties Limited | Real estate | 2018 |
| Tech Commerce Solutions Ltd | Information & communication | 2017 |
| Tech Geek & Vape Ltd | Wholesale & retail | 2025 |
| Tech-Del Limited | Manufacturing | 1996 |
| Techadopt Consulting Limited | Information & communication | 2025 |
| Techcom Computer Repairs Limited | Other services | 2023 |
| Technobless Ltd | Information & communication | 2025 |
| Technocore Automate Limited | Information & communication | 2019 |
| Techtheia Limited | Information & communication | 2025 |
| Telemity Ltd | Information & communication | 2015 |
| Telephone Number Solutions Limited | Information & communication | 2015 |
| Tenant Deposit Advice Ltd | Administrative & support | 2013 |
| Tenuresafe Property Management Limited | Households | 1996 |
| Tertium Quid Consulting Limited | Professional & scientific | 2024 |
| Tesseractal Limited | Information & communication | 2016 |
| Tessier & Ashpool (T&A) Limited | Professional & scientific | 2008 |
| Tete Consulting (Cxiv SLI) Limited | Information & communication | 2025 |
| TGE Catering Limited | Hospitality | 2021 |
| Thai Time Dorking Ltd | Hospitality | 2023 |
| Thai Time Reigate Limited | Hospitality | 2019 |
| Thames Orthodontics Limited | Health & social care | 2018 |
| Thames School of Business Ltd | Education | 2025 |
| Thamesbuilt Ltd | Construction | 2025 |
| Thameside Cafe Limited | Hospitality | 2018 |
| Thandazo Healthcare Limited | Health & social care | 2014 |
| That Being Said Limited | Information & communication | 2018 |
| THE Argosy Works Management Company Limited | Real estate | 1994 |
| THE Artist House Ltd | Education | 2019 |
| THE Bailey Consultancy Limited | Administrative & support | 2002 |
| THE Bailey Partnership Limited | Administrative & support | 1998 |
| THE BE Seen Hub Ltd | Professional & scientific | 2020 |
| THE Brand Scan Ltd | Professional & scientific | 2020 |
| THE Brow Atelier Ltd | Other services | 2026 |
| THE Burger Boyz Merstham Ltd | Hospitality | 2024 |
| THE CDO Group Ltd | Professional & scientific | 2023 |
| THE CDO Property Group Ltd | Real estate | 2026 |
| THE Cellar Door Limited | Information & communication | 2024 |
| THE Chain Marketing Agency Ltd | Professional & scientific | 2023 |
| THE Clair DE Lune Consultancy Limited | Administrative & support | 2002 |
| THE Commercial Kitchen Limited | Information & communication | 2011 |
| THE Compliance Space Ltd | Information & communication | 2019 |
| THE Consulting Arborist Society CIC | Other services | 2013 |
| THE Courtyard (South Nutfield) Ltd | Real estate | 2012 |
| THE Creative Connection (UK) Limited | Professional & scientific | 1991 |
| THE Department of Visual Affairs Limited | Professional & scientific | 2025 |
| THE Design Collective (London) Ltd | Professional & scientific | 2010 |
| THE Digital Vine Limited | Administrative & support | 2009 |
| THE Fairways (Redhill) Residents Association Limited | Households | 1998 |
| THE Fire Safety Shop Limited | Extraterritorial | 2018 |
| THE Fresh Milk Company Limited | Wholesale & retail | 2006 |
| THE Furniture Gallery & Interiors Limited | Professional & scientific | 2024 |
| THE Gamers Guild Limited | Wholesale & retail | 2002 |
| THE Gardens Management Company Limited | Households | 2019 |
| THE Garland Redhill Ltd | Hospitality | 2026 |
| THE Good Garden Design Company Ltd | Administrative & support | 2017 |
| THE Grange Residents Association Limited | Households | 1988 |
| THE Groundsman Ltd | Administrative & support | 2017 |
| THE Head of SEO Ltd | Information & communication | 2025 |
| THE Heathfield Drive Syndicate Limited | Professional & scientific | 2001 |
| THE Hemming Flower Ltd | Professional & scientific | 2023 |