| THE Orchid Flower Limited | Wholesale & retail | 2012 |
| THE Outdoor Education Company (East) Limited | Arts & recreation | 2014 |
| THE Outliers Group Ltd | Arts & recreation | 2020 |
| THE Oxchange Ltd | Education | 2024 |
| THE Paint Team Ltd | Professional & scientific | 2025 |
| THE Pavilions Management Services Company Limited | Households | 1993 |
| THE Pipsroom Ltd | Arts & recreation | 2018 |
| THE PIT Gaming Shop Ltd | Wholesale & retail | 2014 |
| THE Portobello Portfolio Ltd | Construction | 2025 |
| THE Positronic Group Limited | Information & communication | 2015 |
| THE Premji Group Limited | Real estate | 2020 |
| THE Procure Europe Limited | Wholesale & retail | 2016 |
| THE Producers (Films UK) Limited | Information & communication | 2011 |
| THE Producers Distribution Limited | Information & communication | 2005 |
| THE Producers Films (the Pre-Nup) Ltd | Information & communication | 2019 |
| THE Prop Shed Ltd | Manufacturing | 2020 |
| THE Property Arts Group Limited | Real estate | 2024 |
| THE Providence Projects Rehab Group Limited | Health & social care | 2013 |
| THE Provy Holdings Limited | Financial services | 2019 |
| THE Reading Glasses Company Limited | Extraterritorial | 2015 |
| THE Reborn Project Limited | Arts & recreation | 2024 |
| THE Recovery House Limited | Professional & scientific | 2012 |
| THE Red's Building Ltd | Construction | 2018 |
| THE Resilient Stem Ltd | Health & social care | 2026 |
| THE Rokxy Group Limited | Financial services | 2024 |
| THE Rowley Bar and Grill Limited | Hospitality | 2014 |
| THE School Vision Limited | Education | 2024 |
| THE Second Whitestone Property Company Limited | Real estate | 1989 |
| THE Shekinah Glory Day Nursery and After School Club Ltd | Education | 2016 |
| THE Shekinah Glory Recruitment Ltd | Administrative & support | 2018 |
| THE Shop (Hertford) Limited | Wholesale & retail | 2020 |
| THE Situ Room Limited | Administrative & support | 2024 |
| THE Solent Medi Spa Chandlers Ford Limited | Other services | 2019 |
| THE Solent Medi Spa Chichester Ltd | Other services | 2018 |
| THE Soul Sanctuary Ltd | Information & communication | 2018 |
| THE Sound Alliance Limited | Information & communication | 2014 |
| THE Spice Reserve Limited | Wholesale & retail | 2026 |
| THE Square (Barnham) Limited | Real estate | 2012 |
| THE Stables Residents Management Ltd | Other services | 2016 |
| THE Sticky Shop Ltd | Professional & scientific | 2023 |
| THE Sun LDN Ltd | Wholesale & retail | 2024 |
| THE Therapy Couch Ltd | Administrative & support | 2017 |
| THE Thoughtful PUB Company Limited | Hospitality | 2016 |
| THE Tidy Property Company (Bristol) Limited | Administrative & support | 2014 |
| THE Totteridge Portfolio Limited | Real estate | 2025 |
| THE Transport and Recovery Company Ltd | Other services | 2022 |
| THE Trim Centre Limited | Wholesale & retail | 2002 |
| THE Tuition School Ltd | Education | 2024 |
| THE Universal Matrix LLP | | 2010 |
| THE Urban Tech Group Ltd | Information & communication | 2021 |
| THE Valet Company Plus Ltd | Other services | 2016 |
| THE Venue Advisory Company Limited | Professional & scientific | 2020 |
| THE Vinay Group Limited | Financial services | 2025 |
| THE Walking Stick Company Ltd | Wholesale & retail | 2020 |
| THE Waterberg Group Ltd | Hospitality | 2025 |
| THE Wayback Productions Ltd | Information & communication | 2019 |
| THE Welloe Inn Limited | Hospitality | 2022 |
| THE Westgate Healthcare Foundation | Extraterritorial | 2014 |
| THE Westholm Partnership LLP | | 2026 |
| THE White House (Sparrows Herne) Management Limited | Households | 2015 |
| THE Whole Equation Limited | Professional & scientific | 2015 |
| THE Willesden Bookshop Limited | Wholesale & retail | 1989 |
| THE Window Centre (South West) Ltd | Construction | 2016 |
| THE Woburn Brasserie Ltd | Hospitality | 2018 |
| THE Womanity Foundation | Education | 2007 |
| Thea Carroll Property Consultancy Limited | Professional & scientific | 2019 |
| Themainattraction Limited | Information & communication | 2017 |
| Theobald Court Management Company Limited | Households | 1988 |
| Therapeutic Gastroenterology Limited | Health & social care | 2019 |
| There's This Place Ltd | Information & communication | 2015 |
| Thermapro Ltd | Construction | 2023 |
| Thes Vista Ltd | Wholesale & retail | 2023 |
| Thesingularitycompany Limited | Administrative & support | 2017 |
| Thesolarpeople (Lghuk) Limited | Construction | 2022 |
| Think and ACT Differently Ltd | Professional & scientific | 2019 |
| Think Carbon Neutral Ltd | Professional & scientific | 2020 |
| Think JAM Limited | Information & communication | 2003 |
| Thinqdeliver Limited | Information & communication | 2014 |
| Thirdiproperty PTY (UK) Limited | Professional & scientific | 2021 |
| Thirlmere Gardens Residents Association Limited | Households | 1981 |
| Thirty Suns Limited | Financial services | 2018 |
| THIRTY8 London Ltd | Professional & scientific | 2020 |
| This IS Honk Limited | Professional & scientific | 2017 |
| This Single Mama Limited | Information & communication | 2024 |
| Thomas George Developments Ltd | Construction | 2025 |
| Thomas Stirling Limited | Manufacturing | 2023 |
| Thompson Jewitt Properties Limited | Real estate | 2015 |
| Thomson Estate Holdings Limited | Real estate | 2022 |
| Thread Link Limited | Wholesale & retail | 2025 |
| Threaded Futures by Bunmi Okon CIC | Manufacturing | 2025 |
| Three a Logistics Ltd | Transport & logistics | 2021 |
| Three Counties Home Improvements Limited | Construction | 2017 |
| Three SIX Zero Limited | Information & communication | 2006 |
| Threedent Amigos Ltd | Health & social care | 2026 |
| Thrive Creations SEN Support Ltd | Wholesale & retail | 2025 |
| Thrive With AGE Ltd | Other services | 2024 |
| Thrivly Ltd | Information & communication | 2026 |
| Throwback Events Limited | Arts & recreation | 2022 |
| Thrumi Ltd | Information & communication | 2026 |
| Thurlby Media Ltd | Information & communication | 2017 |