| 01 Art Services Ltd. | Transport & logistics | 1992 |
| 1 Buttercross Lane Ltd | Households | 2023 |
| 10-12 Centre Drive Limited | Real estate | 2010 |
| 101 Rigging Ltd | Construction | 2018 |
| 107 Oak Hill Management Company Limited | Households | 2004 |
| 13 Station Road Management Limited | Households | 2022 |
| 14 Sitaray Limited | Other services | 2018 |
| 141 Francis Road Limited | Households | 2013 |
| 1ST Staff Limited | Administrative & support | 2014 |
| 2 Poor Blokes Ltd | Wholesale & retail | 2025 |
| 20 Wilton Street Limited | Real estate | 2021 |
| 2020DM LLP | | 2008 |
| 24 Hour Party People Ltd | Wholesale & retail | 2021 |
| 3 Bedford Avenue Freeholders Limited | Households | 2026 |
| 30-32 ST Petersburgh Place Limited | Households | 2004 |
| 35 Meteor Road Freehold Nominee Company Limited | Households | 2023 |
| 39D Services Limited | Information & communication | 2017 |
| 3D Furniture Ltd | Manufacturing | 2025 |
| 404 Music Limited | Information & communication | 2014 |
| 447 Services Ltd | Information & communication | 2006 |
| 6 Kilbourn Street Management Company Limited | Households | 2020 |
| A & H Health Limited | Wholesale & retail | 2022 |
| A a K Healthcare Limited | Health & social care | 2003 |
| A Henry Ltd | Real estate | 2021 |
| A S G Roofing Ltd | Construction | 2012 |
| A. C. Morrison Limited | Water & waste | 1999 |
| A. Newton & Sons Limited | Real estate | 1928 |
| A.H.G.C Services Ltd | Health & social care | 2022 |
| A.M Mobile Tyres Ltd | Manufacturing | 2022 |
| A.M.G. Warehousing Limited | Real estate | 1978 |
| A.P.A. Computing Limited | Information & communication | 1988 |
| A1 Mechanical & Body Shop Ltd | Professional & scientific | 2026 |
| A1 Motor Group Ltd | Wholesale & retail | 2026 |
| A1 Recovery Ltd | Transport & logistics | 2026 |
| A1 Vehicle Storage Ltd | Wholesale & retail | 2022 |
| A2J2 Consultancy Ltd | Information & communication | 2018 |
| Aaafinity Limited | Professional & scientific | 2025 |
| Aakhan & Sons Ltd | Real estate | 2010 |
| Aamo Wood Consulting Limited | Professional & scientific | 2006 |
| Abbeyview Carpentry Limited | Construction | 2011 |
| Abbeyview Construction Limited | Construction | 2011 |
| Abbeyview Plumbing & Heating Services Limited | Construction | 2022 |
| ABC Stone Ltd | Wholesale & retail | 2016 |
| Abilo Ltd | Information & communication | 2021 |
| Abram Associates Limited | Information & communication | 2016 |
| Abridge Certificates Limited | Professional & scientific | 2012 |
| Abridge Developments Limited | Construction | 1980 |
| Abridge Power and Lighting Limited | Construction | 2010 |
| Absolute Steel Ltd | Manufacturing | 2018 |
| AC Career Services Ltd | Professional & scientific | 2019 |
| Academy Arts Limited | Arts & recreation | 2005 |
| Academy Education Services Limited | Education | 2020 |
| Academy of Forensic Medical Sciences | Education | 2010 |
| Academy Surveys Ltd | Professional & scientific | 2011 |
| Academy Twenty Two Ltd | Real estate | 2025 |
| Accunem Ltd | Real estate | 2021 |
| Ace Beauty Group Ltd | Wholesale & retail | 2024 |
| Ace Contractors ( Epping ) Ltd Limited | Construction | 2019 |
| Acetate TV Ltd | Information & communication | 2013 |
| Acorn Christian Foundation | Education | 1999 |
| Actservices Ltd | Information & communication | 2013 |
| Actual Property Management Limited | Real estate | 2013 |
| Adelie Properties Ltd | Real estate | 2015 |
| ADP Care Limited | Health & social care | 2017 |
| ADS Metalwork Ltd | Construction | 2019 |
| Advance Foam Conversions Limited | Administrative & support | 2016 |
| Advanced Recycling & Recovery Limited | Water & waste | 2024 |
| Aerolink Minicab Transfers Ltd | Transport & logistics | 2023 |
| Affigo.Online Ltd | Professional & scientific | 2025 |
| Affordable Counselling Epping Forest | Professional & scientific | 2006 |
| Ahimanu Ltd | Information & communication | 2018 |
| AK Capital & Investments Holding Ltd | Financial services | 2023 |
| AK Capital Investments Limited | Real estate | 2020 |
| AK Car Care Ltd | Wholesale & retail | 2025 |
| AK Wedding Hire Limited | Administrative & support | 2026 |
| AKF Management Ltd | Real estate | 2025 |
| AKR Horizon Ltd | Wholesale & retail | 2025 |
| AL & EL Productions Ltd. | Information & communication | 1999 |
| Al-Kauthar Ltd | Education | 2025 |
| Albatross Consultancy Limited | Health & social care | 2009 |
| Albco Ltd | Hospitality | 2025 |
| Albions Car Wash Ltd | Administrative & support | 2020 |
| Alderwick Group Ltd | Hospitality | 2026 |
| Aldous Group Limited | Professional & scientific | 2018 |
| Alex Roofing Ltd | Construction | 2025 |
| Alex Trucking Ltd | Transport & logistics | 2024 |
| Alexander Properties Ipswich and London Limited | Construction | 2019 |
| Alexander Properties Ipswich Limited | Construction | 2015 |
| Alfresco Solutions Europe Ltd | Manufacturing | 2013 |
| Alimol Lighting Ltd | Professional & scientific | 2021 |
| ALL Aboard Aviation Solutions Limited | Transport & logistics | 2025 |
| ALL Aboard Building Services Limited | Construction | 2025 |
| ALL Electrical Solutions Ltd | Construction | 2024 |
| ALL Glowed UP Ltd | Other services | 2024 |
| Allied Infinity Consultants Limited | Financial services | 2019 |
| Allnutts Investment Partners Limited | Real estate | 2025 |
| Alloy Project Solutions Limited | Construction | 2016 |
| Alpaca Global Solutions Limited | Information & communication | 2022 |
| Alpha Omega Aviation Limited | Transport & logistics | 2022 |
| Altitude Mortgages Ltd | Financial services | 2022 |