| 1 Force Security Ltd | Administrative & support | 2014 |
| 1-19 Plaza Close Ltd | Real estate | 2018 |
| 13 Brooke Road Limited | Hospitality | 2016 |
| 15 Thorpe Hall ROAD,E.17 Residents Association Limited | Households | 1967 |
| 24 High Street CO9 Limited | Real estate | 2026 |
| 27 a High Street Limited | Real estate | 2025 |
| 28 Connaught Avenue Limited | Hospitality | 2016 |
| 29 CVR Ltd | Professional & scientific | 2018 |
| 2B-3K Limited | Professional & scientific | 2022 |
| 4452 Property Limited | Construction | 2010 |
| 45163 Limited | Arts & recreation | 1991 |
| 4K Inc Limited | Transport & logistics | 2015 |
| 5D Joinery Limited | Construction | 2016 |
| 802 IT Limited | Information & communication | 2019 |
| 8282A High Street Limited | Real estate | 2025 |
| 98 New Street Management Company Limited | Real estate | 2002 |
| @Footballlawyer Ltd | Professional & scientific | 2023 |
| A & T Fire Protection Ltd | Construction | 2024 |
| A Class Roofing & Building Services Ltd | Construction | 2017 |
| A D Build Holdings Limited | Extraterritorial | 2023 |
| A D Build Limited | Construction | 2023 |
| A E Sparrow & SON Ltd | Construction | 2020 |
| A Good Read Limited | Wholesale & retail | 2002 |
| A K Improvement Limited | Professional & scientific | 2013 |
| A L Marketing Communications Limited | Professional & scientific | 1993 |
| A M Properties (Essex) Ltd | Real estate | 2023 |
| A M R a Cost Management Limited | Professional & scientific | 1999 |
| A R Installs Limited | Manufacturing | 2016 |
| A Star Sealants Limited | Construction | 2019 |
| A T Autos (Essex) Limited | Wholesale & retail | 2018 |
| A&G Jefferson Limited | Professional & scientific | 2012 |
| A&L Swann Property Investment Ltd | Real estate | 2022 |
| A.H Joinery & Kitchens Ltd | Manufacturing | 2020 |
| A.N.T. Property Services Limited | Construction | 2007 |
| A.P Vehicle Export Ltd | Wholesale & retail | 2016 |
| A.R.Clarke (Builders) Limited | Construction | 1961 |
| A.S.H. Environmental Limited | Water & waste | 2021 |
| A.W. & A.J. Barnard (Farms) Limited | Agriculture & fishing | 1970 |
| A.W.Corke and Sons Limited | Construction | 1961 |
| A1 Installations Limited | Construction | 2015 |
| AA Appliance Repair Essex Ltd | Other services | 2026 |
| AB Metalworks Limited | Manufacturing | 2003 |
| Abbey Grange Holdings Limited | Real estate | 1995 |
| Abbeystone Freehold Investment Limited | Real estate | 2014 |
| Abbeystone Property Management and Investment Company Limited | Real estate | 2004 |
| Able Paving Limited | Construction | 2006 |
| Absolute Power Distribution Limited | Administrative & support | 2021 |
| Access Gates and Shutters Limited | Administrative & support | 2025 |
| Accknowledge (UK) Limited | Information & communication | 2003 |
| Ace Turfcare Ltd | Manufacturing | 2024 |
| Acorn Plumbing and Property Limited | Construction | 2013 |
| Acorns Preschool Limited | Education | 2010 |
| Acre Asset Management Ltd | Real estate | 2019 |
| Activate Sense and Secure Limited | Manufacturing | 2019 |
| Acton Place Properties Limited | Real estate | 2013 |
| Adams Maltings (Management) Limited | Households | 2006 |
| ADB Freehold Limited | Financial services | 2021 |
| ADB Global Ltd | Financial services | 2018 |
| ADB the Movie Limited | Information & communication | 2021 |
| Addition Steel Ltd | Construction | 2018 |
| Aderico Medical Ltd | Professional & scientific | 2022 |
| ADJ Contracts Limited | Construction | 2014 |
| ADK Automotive Limited | Wholesale & retail | 2023 |
| Adstik Ltd | Wholesale & retail | 2025 |
| Advanced Vehicle Works Ltd | Professional & scientific | 2024 |
| Advantage Electrical Limited | Construction | 2024 |
| Aeroshine Aviation Detailing Ltd | Manufacturing | 2022 |
| Afora Ltd | Financial services | 2026 |
| AG Sunshine Limited | Health & social care | 2016 |
| Agilis Technical Services Ltd | Information & communication | 2015 |
| AGL Design & Installation Limited | Construction | 2015 |
| AI Protect Duty Limited | Professional & scientific | 2025 |
| AIM for Elegance Limited | Other services | 2024 |
| Air-Conditioning Control Limited | Construction | 2023 |
| Airpro Diagnostics Limited | Wholesale & retail | 2023 |
| AJ Epping Ltd | Hospitality | 2018 |
| AJS Freelancer Ltd | Professional & scientific | 2017 |
| Alastair Bols Limited | Wholesale & retail | 2013 |
| Albea Creative UK Limited | Manufacturing | 2018 |
| Albea UK Limited | Manufacturing | 1899 |
| Alex Mildenhall Lighting Limited | Information & communication | 2012 |
| ALG Contracts Limited | Extraterritorial | 2009 |
| Alison Hurrell Limited | Professional & scientific | 2008 |
| ALL Aboard Research Ltd | Professional & scientific | 2023 |
| ALL Saints Academy Trust | Education | 2017 |
| Allen Plumbing & Heating Limited | Construction | 2017 |
| Allspec Electrical Limited | Construction | 2013 |
| Aloe Distribution & Logistics Ltd | Wholesale & retail | 2026 |
| Alpha-Tech Group Ltd | Construction | 2018 |
| Altin Makas Limited | Other services | 2022 |
| Amber Design (London) Limited | Extraterritorial | 2009 |
| American Marquee Hire Limited | Administrative & support | 2004 |
| Amethyst Construction East Anglia Ltd | Construction | 2023 |
| Amos Construction Services Ltd | Construction | 2020 |
| AMP and Decks Entertainment Ltd | Hospitality | 2019 |
| Ampal Systems Limited | Administrative & support | 2020 |
| AMR Flooring Limited | Construction | 2012 |
| Andy Fleming Electrical Ltd | Construction | 2009 |
| ANG Smart Services Ltd | Transport & logistics | 2023 |
| Anglia Fixing Holdings Ltd | Manufacturing | 2023 |