| 1-2-10 Transformation Ltd | Professional & scientific | 2020 |
| 1-4 Tower View Limited | Households | 2022 |
| 10 Count Limited | Manufacturing | 2022 |
| 10 Edward Street Management Limited | Households | 2007 |
| 10 Riverdale Road Ltd | Households | 1994 |
| 10 TON Gorilla Ltd | Professional & scientific | 2024 |
| 10/11 Chester Way Limited | Extraterritorial | 1987 |
| 104 Belgrave Road Limited | Households | 2000 |
| 11 Kempsford Gardens Management Company Limited | Households | 1997 |
| 12 New Street Limited | Real estate | 2019 |
| 124 Alderney Street Freehold Limited | Households | 2010 |
| 128 Belgrave Road Management Limited | Households | 1987 |
| 13 Denbigh ST Limited | Real estate | 2013 |
| 132 Mobberley Road Limited | Households | 2002 |
| 1519 Logistics Limited | Extraterritorial | 2022 |
| 17 Clarendon Road Management Company Limited | Administrative & support | 1985 |
| 17 Marjorie Grove Limited | Households | 2018 |
| 170 Cambridge Street Management Company Limited | Households | 1989 |
| 174 Limited | Households | 1988 |
| 18 Aynhoe Freehold Limited | Households | 2025 |
| 1ST Awards Limited | Professional & scientific | 2019 |
| 20 Harcourt Terrace Limited | Households | 1997 |
| 20/20PERFORMANCE Limited | Professional & scientific | 2025 |
| 24 Charlwood Street Limited | Households | 2008 |
| 24 Sussex Street SW1 Limited | Households | 2024 |
| 24-7 Cumbria Limited | Financial services | 2025 |
| 24-7 East England Limited | Financial services | 2025 |
| 24-7 Energy Services Limited | Energy | 2023 |
| 24-7 Engineering Group Limited | Extraterritorial | 2010 |
| 24-7 FM Limited | Administrative & support | 2002 |
| 24-7 Group Limited | Construction | 2011 |
| 24-7 Holdings Limited | Professional & scientific | 2009 |
| 24-7 Mechanical Ltd | Extraterritorial | 2009 |
| 24-7 Projects Ltd | Extraterritorial | 2009 |
| 24-7 Security Fire and Data Limited | Administrative & support | 2020 |
| 27 Lyndhurst Road Limited | Households | 2006 |
| 3 Shires Marketing Limited | Administrative & support | 2018 |
| 30 Kempsford Gardens Limited | Households | 2006 |
| 360 Plant Ltd | Manufacturing | 2008 |
| 360 Tech Group Ltd | Information & communication | 2024 |
| 360THRIVE Ltd | Professional & scientific | 2023 |
| 365 Direct Limited | Other services | 2011 |
| 3XP Ltd. | Real estate | 2002 |
| 438 Marketing Limited | Professional & scientific | 2008 |
| 47 Wilton Limited | Construction | 2023 |
| 4SOLAR Ltd | Construction | 2024 |
| 4WARD Brands Limited | Wholesale & retail | 2013 |
| 50 Alderney Street Freehold Limited | Households | 2017 |
| 50 Harley Street Property Management Limited | Administrative & support | 1996 |
| 55 Alderney Street Limited | Households | 2007 |
| 59 Earls Court Square Freehold Limited | Households | 2022 |
| 63 Bounds Green Road Limited | Real estate | 2003 |
| 68 Winchester Street Limited | Households | 2015 |
| 77 Mortlake High Street RTM Company Limited | Households | 2011 |
| 7DS GP Clinical Ltd | Health & social care | 2025 |
| 8 Moorgate GP Ltd | Construction | 2011 |
| 8 Moorgate Limited Partnership | | 2011 |
| 8 Moorgate Nominee Ltd | Construction | 2011 |
| 80 Eccleston Square Ltd | Real estate | 2018 |
| 808 Group Limited | Administrative & support | 2022 |
| 85 Gloucester Street (Freehold) Limited | Real estate | 2023 |
| A & M Investments Limited | Real estate | 1998 |
| A & M Marquees/Events Ltd | Other services | 2001 |
| A G INT Limited | Agriculture & fishing | 2009 |
| A G Smith Consultancy Limited | Information & communication | 2007 |
| A Room With a VOO Ltd | Real estate | 2021 |
| A Terrain Commercials Ltd | Manufacturing | 2023 |
| A&A DE Vernon Properties Limited | Hospitality | 2023 |
| A&D LEE Property Investments Ltd | Real estate | 2023 |
| A&D Property Investments LLP | | 2023 |
| A.I.L Holdings Limited | Financial services | 2019 |
| A.I.L Packaging Holdings Limited | Financial services | 2024 |
| A.R.Bathrooms Limited | Construction | 2016 |
| Aavai Ltd | Real estate | 2024 |
| AB Cabs Knutsford Ltd | Transport & logistics | 2023 |
| AB2 Housing Ltd | Real estate | 2025 |
| AB2 Properties Ltd | Construction | 2020 |
| Abacus Cost Management Limited | Professional & scientific | 2007 |
| ABB Windows Ltd | Manufacturing | 2016 |
| Abbey England Limited | Wholesale & retail | 1982 |
| Abbey Saddlery & Crafts Limited | Wholesale & retail | 2011 |
| Abbeyfield Knutsford Society Limited | Hospitality | 1965 |
| Abbotts Enterprise Ltd | Real estate | 2021 |
| Absolute Apex Limited | Professional & scientific | 1996 |
| Absolute Partners Together Limited | Administrative & support | 2011 |
| AC Winter Maintenance Ltd | Transport & logistics | 2024 |
| ACCELER8 Clinical Research Limited | Professional & scientific | 2022 |
| ACM Health Solutions Limited | Construction | 2002 |
| Acobas Limited | Real estate | 2022 |
| Acobas Software Limited | Other services | 2025 |
| Acorn House Developments Ltd | Real estate | 2019 |
| Acorn Landscape Services (Cheshire) Limited | Administrative & support | 2013 |
| ACT 1 Investments Ltd | Real estate | 2025 |
| Actihire Venues Ltd | Education | 2020 |
| Active Power Engineering Limited | Professional & scientific | 2026 |
| Adapt Property Group Limited | Construction | 2022 |
| Adaptio Ltd | Construction | 2017 |
| ADD Assets Limited | Transport & logistics | 2019 |
| Adhamswholesales Ltd | Wholesale & retail | 2022 |
| ADM Computing Ltd | Information & communication | 2000 |