| & Daughters Property Ltd | Real estate | 2026 |
| 1-11 (Odds) Goodman Drive RTM Company Ltd | Households | 2026 |
| 1-25 Clay Furlong RTM Company Limited | Administrative & support | 2020 |
| 1-27 Peddle Court RTM Company Limited | Households | 2017 |
| 10TED Ltd | Wholesale & retail | 2020 |
| 113 Fortess Road Limited | Households | 1999 |
| 1417 LB Langtry Court Limited | Households | 2025 |
| 18 Percent Grey Limited | Information & communication | 2010 |
| 1ST Homecare (Holdings) Limited | Financial services | 2015 |
| 1ST Homecare Solutions Limited | Health & social care | 2010 |
| 20/20 Vision & Eyewear Ltd | Wholesale & retail | 2018 |
| 22 Music Academy Ltd | Arts & recreation | 2025 |
| 22 Music School Ltd | Education | 2024 |
| 236 Works Limited | Professional & scientific | 2022 |
| 25 Davigdor Road Hove Limited | Extraterritorial | 2004 |
| 286 Design Ltd | Construction | 2024 |
| 297 Consultancy Ltd | Professional & scientific | 2022 |
| 2IT1 UK Co. Ltd. | Wholesale & retail | 2025 |
| 30 Degrees Limited | Administrative & support | 2018 |
| 31 King Street Limited | Real estate | 2006 |
| 34-40 Peddle Court RTM Company Limited | Households | 2018 |
| 35 High Street Management Company Limited | Real estate | 2018 |
| 35 West Hill Consultancy Ltd | Professional & scientific | 2022 |
| 360 Close Protection Ltd | Administrative & support | 2021 |
| 361 Degrees Ltd | Energy | 2013 |
| 3D Investment Partnership LLP | | 2013 |
| 3DOM Construction Ltd | Construction | 2022 |
| 3DOM Group Holdings Ltd | Financial services | 2022 |
| 3DOM Real Estate Ltd | Real estate | 2022 |
| 3DOM Rental Ltd | Administrative & support | 2022 |
| 3KPM Limited | Construction | 2021 |
| 40 Thame Road Management Limited | Households | 2013 |
| 40 West Street Residents Management Company Limited | Households | 2015 |
| 43 Wing Road Management Company Limited | Households | 2025 |
| 44 Malden Road Management Company Limited | Households | 2000 |
| 443 Cyber Consulting Limited | Information & communication | 2021 |
| 48H Live Limited | Information & communication | 2008 |
| 4D Services Limited | Information & communication | 2025 |
| 4R Medical Limited | Health & social care | 2025 |
| 4SCIENCES Group Ltd | Professional & scientific | 2020 |
| 4SHR Limited | Hospitality | 2015 |
| 51DEGREES Consulting Limited | Information & communication | 2016 |
| 54 KAY Road Management Company Limited | Real estate | 2010 |
| 541328 (ONT) Inc | | 1984 |
| 55 Victoria Street Management Company Limited | Households | 2016 |
| 6 - 8 Fernlea Road Freehold Limited | Households | 2014 |
| 78 Woburn RD Management Service Ltd | Real estate | 2007 |
| 7AM Consulting Limited | Professional & scientific | 2009 |
| 7DAY AVD Ltd | Education | 2017 |
| 7EVEN Candles Ltd | Wholesale & retail | 2022 |
| 7TWENTY Solutions Limited | Information & communication | 2015 |
| 8 Over 7 Capital Ltd | Financial services | 2015 |
| A D Rolfe Electrical Limited | Construction | 2026 |
| A D S Design and Build Ltd | Construction | 2022 |
| A Donut Stunts Ltd | Arts & recreation | 2023 |
| A J Doherty Contractors (UK) Ltd | Other services | 2016 |
| A J Drylining Limited | Construction | 2026 |
| A J H Building Contractors Limited | Construction | 2016 |
| A J Recruit Ltd | Administrative & support | 2024 |
| A K Carpentry Services Ltd | Construction | 2003 |
| A K Richards Consulting Ltd | Information & communication | 2023 |
| A M R Housing Solutions Limited | Real estate | 2013 |
| A New Height Ltd | Professional & scientific | 2020 |
| A Odedra Limited | Information & communication | 2019 |
| A Star Construction Group Limited | Construction | 2018 |
| A Wilkinson Company Ltd | Administrative & support | 2025 |
| A&A Management Ltd | Real estate | 2013 |
| A&B Balsa Ltd | Construction | 2016 |
| A. R. Mills (Motors) Limited | Wholesale & retail | 2005 |
| A.Abraham Tower Crane Hire Ltd | Administrative & support | 2016 |
| A.J. Winkfield & SON Limited | Transport & logistics | 1979 |
| A.P.R. Engineering (Northampton) Limited | Wholesale & retail | 1991 |
| A.R Coaching Academy Ltd | Professional & scientific | 2024 |
| A2RENEWABLES Ltd | Professional & scientific | 2026 |
| AA Asbestos Limited | Water & waste | 2020 |
| AA Taxis Leighton Buzzard Ltd | Transport & logistics | 2015 |
| AAG SERVICES1 Limited | Arts & recreation | 2024 |
| AAJ Plastering Ltd | Construction | 2025 |
| Aalishaluxuries Ltd | Administrative & support | 2024 |
| Aaplus Ltd | Hospitality | 2017 |
| Aaristech Limited | Information & communication | 2024 |
| Aaron & Solomon Healthcare Ltd | Health & social care | 2025 |
| Aavant Developments Ltd | Construction | 2024 |
| AB Beauty Consultancy Limited | Professional & scientific | 2019 |
| AB Vehicle Repairs (Leighton Buzzard) Limited | Wholesale & retail | 2021 |
| ABA Wealth Solutions Limited | Professional & scientific | 2019 |
| Abbey Cheese Company Limited | Wholesale & retail | 2002 |
| Abbey Pynford Foundation Solutions Limited | Construction | 2012 |
| Abbey Pynford Foundation Systems Limited | Construction | 1998 |
| Abbey Pynford GEO Structures Ltd | Construction | 2012 |
| Abbey Pynford Holdings Limited | Professional & scientific | 2004 |
| Abbey Pynford Limited | Construction | 1990 |
| Abbotts Mill (Aylesbury) Management Limited | Households | 1998 |
| ABC Recruitment & Support Ltd | Administrative & support | 2025 |
| ABE Electrical Services Ltd | Construction | 2023 |
| Ability Steel Fabrication Ltd | Other services | 2023 |
| Abimic Healthcare Ltd | Health & social care | 2025 |
| Ablivambo Properties Ltd | Real estate | 2025 |
| ABM Investments Limited | Real estate | 2002 |
| ABM Technologies Ltd | Wholesale & retail | 2013 |