| Tawton Business Solutions Limited | Administrative & support | 2002 |
| Tax Link (UK) Limited | Extraterritorial | 1997 |
| Taylor Walton LLP | | 2007 |
| TB2 Mechanical Ltd | Construction | 2022 |
| Techniman Limited | Wholesale & retail | 2000 |
| Teknik Office Limited | Wholesale & retail | 1987 |
| Temple Investments Limited | Real estate | 2003 |
| Tetteh Plahar Designs Limited | Administrative & support | 2015 |
| THE Bike BAG Limited | Wholesale & retail | 2013 |
| THE Connolly Foundation (UK) Limited | Administrative & support | 2004 |
| THE Finer Detail Limited | Extraterritorial | 1996 |
| THE Glenn Miller Museum Limited | Hospitality | 2002 |
| THE Global Access Foundation | Professional & scientific | 2020 |
| THE Green Parts Specialists Limited | Wholesale & retail | 2019 |
| THE Happy Brewer Limited | Administrative & support | 2009 |
| THE House Doctor (Plumbing & Heating) Limited | Construction | 2002 |
| THE Kindred Group London Ltd | Financial services | 2024 |
| THE Mindful Travel Ltd | Administrative & support | 2025 |
| THE Observer Close Management Company Limited | Households | 2003 |
| THE Park Trees Management Company Limited | Real estate | 1988 |
| THE Podiatry Practitioner Ltd | Health & social care | 2007 |
| THE Procurement Space Ltd | Arts & recreation | 2007 |
| THE Rothsay Education Centre (Bedford) Ltd. | Education | 1997 |
| THE Snowdon Family Company Limited | Construction | 2001 |
| THE Virtual Work Shop Limited | Administrative & support | 2005 |
| THE Wady Company Limited | Other services | 2005 |
| THE Warehouse.Com Limited | Wholesale & retail | 2005 |
| THE Word Among US International Ltd | Information & communication | 1998 |
| Thermal Economics Limited | Wholesale & retail | 1982 |
| Thompson Golf Limited | Arts & recreation | 1992 |
| Three Quays LP | | 2001 |
| Thrivology Limited | Professional & scientific | 2021 |
| Tierra Firma Ltd | Real estate | 2021 |
| Tillett and Hague Technology Limited | Manufacturing | 2005 |
| TN Collections Ltd | Wholesale & retail | 2025 |
| TOC Recycling Limited | Water & waste | 2002 |
| Top Investments UK Limited | Real estate | 2005 |
| Topham & Eaton Limited | Construction | 2002 |
| Total VAG Limited | Manufacturing | 2007 |
| Train 4 Trade Skills Limited | Extraterritorial | 1997 |
| Trapoc Limited | Real estate | 2007 |
| Tredo Products Limited | Manufacturing | 1987 |
| Trim and Trendy Limited | Manufacturing | 2004 |
| Tripmode Limited | Administrative & support | 2025 |
| Trojan (Milton Keynes) Limited | Information & communication | 2001 |
| Trpc Limited | Professional & scientific | 2007 |
| Tsteps Consulting Limited | Professional & scientific | 2005 |
| Tudor Landscapes Limited | Arts & recreation | 1984 |
| Turner Design and Build Ltd | Construction | 2020 |
| Tuttofare Limited | Health & social care | 2016 |
| Twinwood Events Limited | Arts & recreation | 1998 |
| Twinwood Marketplace Limited | Wholesale & retail | 1999 |
| UK Apartment Hub Ltd | Real estate | 2016 |
| UK Tents Lifestyle Ltd | Wholesale & retail | 2025 |
| Unplugged Living Ltd. | Wholesale & retail | 2017 |
| Uplandian Ltd | Real estate | 2019 |
| Usability Consultants Limited | Professional & scientific | 2002 |
| Utac Acquisition Co Ltd | Financial services | 2021 |
| V P Plumbing Services Limited | Construction | 2002 |
| Valeman Limited | Real estate | 1987 |
| Vertergi Group Ltd | Information & communication | 2016 |
| Vertibird Limited | Information & communication | 2003 |
| Vimap Limited | Professional & scientific | 2006 |
| Vinaya Patel Ltd | Hospitality | 2018 |
| Vince Electrical & Mechanical Services Limited | Construction | 2007 |
| Vincent B. Mcmorrow Construction Services Limited | Construction | 2002 |
| Violets Homecare Services Ltd | Health & social care | 2007 |
| Virtual Homes Limited | Hospitality | 1997 |
| Vision to Market Ltd. | Administrative & support | 2007 |
| Vraj RCH Ltd | Wholesale & retail | 2018 |
| W. a. Austin Limited | Administrative & support | 2006 |
| Wady's Electrical Limited | Construction | 2001 |
| Waterdene Foodservice Limited | Wholesale & retail | 1982 |
| Wcart Limited | Professional & scientific | 2001 |
| Webzine.Io Ltd | Information & communication | 2026 |
| Wedge Engineering Limited | Manufacturing | 2001 |
| Weekly Quiz Ltd | Arts & recreation | 2011 |
| Wellscott Homes Limited | Real estate | 1979 |
| Wentworth Laboratories Limited | Manufacturing | 1977 |
| Westoning Manor Residents Limited | Households | 2004 |
| Westways Carriage Horses Limited | Agriculture & fishing | 2014 |
| Wharfside Dental Laboratory Limited | Health & social care | 2007 |
| Wheatlands Management (LEA Valley) Limited | Administrative & support | 2004 |
| Whichcraft Jewellery Ltd | Manufacturing | 2025 |
| Whipperley Ring Service Station Limited | Wholesale & retail | 1992 |
| Whitbread Farms Limited | Agriculture & fishing | 1985 |
| White Tiger Management Limited | Information & communication | 1990 |
| Whitehill Spindle Tools Limited | Manufacturing | 1938 |
| Whitley Garage Ltd | Extraterritorial | 1986 |
| Whyborn Electrical Contractors Limited | Construction | 2007 |
| William Willoughby (Estates) Limited | Construction | 2002 |
| Willowbridge Limited | Extraterritorial | 1998 |
| Wimbleton Cross Limited | Information & communication | 2002 |
| Wingate Software Limited | Information & communication | 2006 |
| Woburn 4X4 Service Centre Limited | Wholesale & retail | 2002 |
| Wonderland Day Care Nursery Co-Op (Luton) Ltd | Health & social care | 1995 |
| Woodland Solutions Limited | Households | 2001 |
| Wootton Management Co Ltd | Households | 2022 |
| Workfloat Limited | Wholesale & retail | 2003 |
| Wren Buyerco Limited | Administrative & support | 2015 |