| 1ST Choice Garage Doors & Gates Limited | Financial services | 1976 |
| 1ST Choice Garage Doors Limited | Wholesale & retail | 1989 |
| 6FL Real Estate Limited | Real estate | 2022 |
| 91 Barden Road Limited | Professional & scientific | 2021 |
| A Greener Vision Ltd | Water & waste | 2023 |
| A J Butler Ltd | Administrative & support | 2013 |
| A M Nicholson Limited | Professional & scientific | 2024 |
| A S Parr Limited | Construction | 2015 |
| A&R Projects Ltd | Real estate | 2026 |
| A4G Audit Limited | Professional & scientific | 1999 |
| A4G Bookkeeping Limited | Professional & scientific | 2015 |
| A4G Equity LLP | | 2008 |
| A4G Growth LLP | | 2014 |
| A4G LLP | | 2006 |
| A4G Management LLP | | 2006 |
| A4G Payroll LLP | | 2012 |
| A4G Small Business Services Ltd | Professional & scientific | 2001 |
| A4G Wealth LLP | | 2021 |
| A5 Architecture Limited | Professional & scientific | 2013 |
| AAP Leisure Group Ltd | Arts & recreation | 2024 |
| AC Mitcham Ltd | Construction | 2023 |
| Accord Consulting Limited | Professional & scientific | 2003 |
| Accord Consulting Topco Limited | Information & communication | 2024 |
| Accountants for Traders Limited | Professional & scientific | 2014 |
| Accounting by Cutting LLP | | 2022 |
| ACT Publishing UK Limited | Administrative & support | 1999 |
| Adco Glazing Limited | Construction | 2011 |
| Adlids Limited | Extraterritorial | 1996 |
| Advisory by Cutting Ltd | Administrative & support | 2022 |
| Ady-Hv Investments Limited | Administrative & support | 2022 |
| Ady-Hv Limited | Construction | 2017 |
| Africa Muslims Agency Limited | Education | 2022 |
| Agile Construction Limited | Construction | 2019 |
| AHC Drummond LLP | | 2023 |
| Air Movement Solutions LLP | | 2024 |
| ALC Media Ltd | Arts & recreation | 2023 |
| Alphavictor Capital Management Ltd | Administrative & support | 2014 |
| Alram Limited | Administrative & support | 2010 |
| Amberley Developments (Kent) Ltd | Construction | 2021 |
| Amdar Capital Advisors Limited | Financial services | 2024 |
| Amjai (UK) Ltd | Administrative & support | 2013 |
| Amjai Care Limited | Administrative & support | 2017 |
| Amjai Holdings Ltd | Financial services | 2016 |
| Amjai Investments Limited | Real estate | 2014 |
| Ampi Limited | Professional & scientific | 2008 |
| Analaya Limited | Arts & recreation | 2017 |
| Anchorfree Ltd | Information & communication | 2010 |
| Anthony Charles Investments (ACI) Limited | Real estate | 2021 |
| Antler Enterprises Limited | Administrative & support | 2016 |
| Antler Holdings Limited | Administrative & support | 2021 |
| Anything Air Handling Ltd | Professional & scientific | 2016 |
| AOT Design Ltd | Professional & scientific | 2023 |
| Apollo Metal Merchants Ltd | Water & waste | 2025 |
| Arquine LLP | | 2009 |
| Arundel Holt Ltd | Administrative & support | 2010 |
| ASC Capital Limited | Financial services | 2025 |
| ASH House South Ltd | Real estate | 2024 |
| ASH Southgate Properties Limited | Other services | 2005 |
| Asktheexpert Limited | Administrative & support | 1999 |
| ASP Health Ltd | Professional & scientific | 2020 |
| Atkinson's Electrical Ltd | Construction | 2025 |
| Aurelia Properties Limited | Real estate | 1983 |
| Avxpro Ltd. | Information & communication | 2019 |
| Axiom Projects Holdings Ltd | Real estate | 2017 |
| Axiom Projects Ltd | Professional & scientific | 2015 |
| Azumo Assist Ltd | Administrative & support | 2021 |
| Backleyblack Limited | Real estate | 2012 |
| BAX VS Ltd | Administrative & support | 2020 |
| Bbge Capital Limited | Real estate | 2021 |
| BE Specific Consulting Ltd | Information & communication | 2010 |
| Beckford Capital Limited | Financial services | 2025 |
| Beech Education Ltd | Education | 2016 |
| Belmont Installations Ltd | Construction | 2021 |
| Big Sky Productions Limited | Information & communication | 2010 |
| Bita Limited | Other services | 2015 |
| Black Belt Accounting LLP | | 2019 |
| Blue Eagle Developments Ltd | Construction | 2021 |
| Blue Profile Limited | Information & communication | 1997 |
| Blue Profile Management LLP | | 2010 |
| Blunomy Advisory UK Ltd | Professional & scientific | 2022 |
| Body Clinic Performance Ltd | Other services | 2014 |
| Bodyartists Ltd | Wholesale & retail | 2014 |
| Boroughs Oak Paddock Limited | Real estate | 2006 |
| Boyke Properties Ltd | Real estate | 2021 |
| Bridge Bar and Nightclub Ltd | Hospitality | 2026 |
| Brite Metals Limited | Administrative & support | 2019 |
| Broadsure Direct Limited | Administrative & support | 2006 |
| Brookland Films Ltd | Information & communication | 2025 |
| C Squared Aviation Solutions LLP | | 2023 |
| C&E Training Solutions Limited | Administrative & support | 2013 |
| Cadwise Solutions Ltd | Construction | 2024 |
| Caesaris Denarii Limited | Financial services | 2025 |
| CAM VET Limited | Professional & scientific | 2011 |
| Capital Property Assets Ltd | Real estate | 2014 |
| Capital UK Group Limited | Wholesale & retail | 2020 |
| Care and Training Services Limited | Health & social care | 2006 |
| Carpe Datum Ltd | Administrative & support | 2017 |
| Carrillo & Coello Services Limited | Administrative & support | 2013 |
| Carrot Connect Ltd | Information & communication | 2022 |
| Cayman Connection CIC | Wholesale & retail | 2019 |