| Teuk Services Ltd | Professional & scientific | 2024 |
| Textile Recycling Limited | Professional & scientific | 2006 |
| Thai Therapeutics Limited | Other services | 2002 |
| Thakker & Sons Limited | Wholesale & retail | 2009 |
| Thames Street Management Company Limited | Real estate | 1993 |
| Thames Valet (Wallingford) Limited | Arts & recreation | 1999 |
| Thappy Ltd | Financial services | 2021 |
| THE 21ST Century Group Ltd | Information & communication | 2026 |
| THE Acting Initiative Limited | Arts & recreation | 1993 |
| THE Allam Group Limited | Professional & scientific | 1926 |
| THE Appsters Ltd | Information & communication | 2001 |
| THE Attic Room Limited | Other services | 2006 |
| THE Bala Foundation | Administrative & support | 2006 |
| THE Body of Christ World Wide Limited | Hospitality | 2011 |
| THE BP Share Plans Trustees Limited | Professional & scientific | 1979 |
| THE Bridge Theatre Training Company | Arts & recreation | 1995 |
| THE British Cardio-Oncology Society | Health & social care | 2018 |
| THE British Way Ltd | Professional & scientific | 2012 |
| THE Bury Manor Residents Limited | Households | 1998 |
| THE Chalfont Project Ltd | Professional & scientific | 1999 |
| THE Child Care Network Limited | Education | 2003 |
| THE Citrus Partnership Limited | Professional & scientific | 1999 |
| THE City Mortgage Company Ltd | Financial services | 1998 |
| THE Clothes Horse (London) Limited | Wholesale & retail | 2003 |
| THE Coupon Post Limited | Professional & scientific | 2007 |
| THE Davies Girls Ltd | Professional & scientific | 2004 |
| THE DOT HQ Ltd | Financial services | 2020 |
| THE DOT Professionals Limited | Administrative & support | 2020 |
| THE Ebury Group Limited | Professional & scientific | 2004 |
| THE European Evaluation Consortium ("Teec") Ukeig | | 2002 |
| THE EYE Galleria Limited | Wholesale & retail | 2005 |
| THE Eyewear House Limited | Health & social care | 1999 |
| THE Famous Kensington Tandoori Limited | Hospitality | 2000 |
| THE Faraday Partnership Limited | Administrative & support | 2004 |
| THE Flintman Company Limited | Construction | 2002 |
| THE Flying EGG Co Limited | Hospitality | 2024 |
| THE Friendly One Limited | Water & waste | 2004 |
| THE Genius Works Limited | Professional & scientific | 2007 |
| THE Gillett Macleod Partnership Ltd. | Professional & scientific | 2007 |
| THE Gold Centre (Fulham) Limited | Wholesale & retail | 2003 |
| THE Golden Grail of Universal Life | | 1989 |
| THE Greater London Finance Company Limited | Real estate | 1993 |
| THE Green Propertist Ltd | Real estate | 2022 |
| THE Greenacres Day Nursery School Limited | Education | 1996 |
| THE Greenway (Uxbridge) Management Company Limited | Households | 1993 |
| THE Investor Limited | Real estate | 2003 |
| THE Invisible Picture Company Limited | Information & communication | 2011 |
| THE John Boddy Agency LLP | | 2007 |
| THE Kindergarten Nursery Schools Limited | Education | 2003 |
| THE Kingston Masonry Company Limited | Other services | 2000 |
| THE Lavenders Residents Association Limited | Households | 1993 |
| THE LEE Residents Association Limited | Households | 2000 |
| THE Leprosy Mission International | Health & social care | 1998 |
| THE Letting Line Limited | Real estate | 2000 |
| THE London China Company Limited | Wholesale & retail | 2007 |
| THE Magdi Yacoub Institute | Professional & scientific | 2000 |
| THE Mayfair Mortgage Centre Limited | Financial services | 1999 |
| THE Membership Company Limited | Wholesale & retail | 2001 |
| THE Mint Condition Group Ltd | Administrative & support | 2020 |
| THE Musical Museum | Arts & recreation | 1989 |
| THE Musical Museum (Trading) Limited | Arts & recreation | 1989 |
| THE National Guild of Spar Limited | Wholesale & retail | 1958 |
| THE Oaks Woodside Park Limited | Households | 1993 |
| THE Order of ST. Maria of Jerusalem (Teutonic Order) of the House of Antioch and Svevia | | 1996 |
| THE Overnight Success Company Limited | Extraterritorial | 1987 |
| THE Panas Group of Companies Limited | Wholesale & retail | 1994 |
| THE Panjabi Centre Ltd | Information & communication | 1997 |
| THE Paul Kelly Limited Partnership | | 1998 |
| THE Penuel- Professional Care Services Ltd | Health & social care | 2002 |
| THE POP Art Collection Limited | Arts & recreation | 2002 |
| THE Powell Plasterwork Company Limited | Information & communication | 2001 |
| THE Prayag Partnership Limited | Professional & scientific | 2007 |
| THE Premier Group Limited | Wholesale & retail | 2005 |
| THE Property Corporation UK Limited | Households | 1996 |
| THE Property Market (Cranford) Limited | Real estate | 2002 |
| THE Right Image Ltd. | Professional & scientific | 1996 |
| THE Ruislip Spice Ltd | Extraterritorial | 2016 |
| THE Saints Fellowship International Limited | Other services | 2003 |
| THE Scott Foods Co. Ltd | Manufacturing | 2023 |
| THE Sherwood Clinic Limited | Health & social care | 2004 |
| THE Silver Skip Company Ltd | Water & waste | 2016 |
| THE Smile Studios Limited | Health & social care | 2007 |
| THE SPF Consultancy Limited | Professional & scientific | 2006 |
| THE SRB Trustee Company Limited | Administrative & support | 2007 |
| THE Steri-Brush Company Ltd. | | 1997 |
| THE Strategy Works Limited | Professional & scientific | 1993 |
| THE Suit CTR Limited | Real estate | 1989 |
| THE Sunglass Shop Limited | Other services | 1988 |
| THE Sycamore Residents Association (Hampton Hill) Limited | Extraterritorial | 1989 |
| THE Teddington Butcher Ltd | Administrative & support | 2006 |
| THE Temple Trust | Professional & scientific | 1994 |
| THE Tyre & Exhaust Centre Limited | Wholesale & retail | 2001 |
| THE Universal Coaching Alliance C.I.C. | Other services | 2023 |
| THE Upholsterer Ltd | Information & communication | 2008 |
| THE Villas (147/149 Gresham Road) Management Co Ltd | Households | 1988 |
| THE Watford Fonz Ltd | Arts & recreation | 2013 |
| Theideasman Ltd | Professional & scientific | 2006 |
| Thermal Systems Limited | Administrative & support | 2003 |
| Thermaloft (U.K.) Limited | | 1982 |
| Thind Films Limited | Arts & recreation | 2023 |