| 1-11 (ODD) Hampden Close North Weald Company Limited | Households | 1989 |
| 10 Yeate Street Limited | Real estate | 2006 |
| 113 Whipps Cross Road Limited | Real estate | 2010 |
| 1888 Trading Ltd | Administrative & support | 2019 |
| 1UP Gaming World Ltd | Other services | 2024 |
| 21 Hornchurch Ltd | Other services | 2024 |
| 37-44 Amberry Court Management Limited | Households | 1986 |
| 37-44 Amberry Court RTM Company Ltd | Real estate | 2025 |
| 3MD Logistics Ltd | Transport & logistics | 2019 |
| 4 Elstar Road Limited | Real estate | 2025 |
| 5 Star Sealants Limited | Construction | 2018 |
| A & J Roberts Limited | Administrative & support | 2006 |
| A & S Barbers Limited | Other services | 2012 |
| A Cressey Limited | Financial services | 2023 |
| A J Electromech Limited | Other services | 2015 |
| A New Home Limited | Real estate | 2019 |
| A.W.Page(Upholsterers)Limited | Wholesale & retail | 1956 |
| Aajar Limited | Wholesale & retail | 2012 |
| Abell Administration Ltd | Construction | 2024 |
| Accomplished Events Limited | Professional & scientific | 2011 |
| Accounting (Essex) Limited | Professional & scientific | 2011 |
| Accounting Financial Services Limited | Professional & scientific | 2014 |
| Aces Accountancy Services Limited | Professional & scientific | 2004 |
| Aces Accounts and Taxation Ltd | Professional & scientific | 2008 |
| ACL Commercial Ltd | Other services | 2016 |
| Acorn Plumbing and Heating Limited | Construction | 2021 |
| ACT to Change Limited | Administrative & support | 2007 |
| ADA MAY Designs Ltd | Professional & scientific | 2020 |
| ADP Plumbwrite Ltd | Construction | 2013 |
| Adspec Construction Ltd | Construction | 2021 |
| Advanced Drone Security Limited | Administrative & support | 2023 |
| Advanced Smoke Solutions Ltd | Administrative & support | 2026 |
| AGM Health Ltd | Financial services | 2024 |
| AGS Inc Properties Ltd | Real estate | 2017 |
| Aionios Investments Ltd | Other services | 2024 |
| Aird Enterprises Ltd | Wholesale & retail | 2021 |
| AJ Developments Essex LLP | | 2026 |
| AJB Portfolio Limited | Real estate | 2022 |
| Alane Lunn Solicitor Limited | Professional & scientific | 2021 |
| Alfiemae Lighting Limited | Construction | 2018 |
| Allied Organic Foods Limited | Wholesale & retail | 2002 |
| Allot Limited | Information & communication | 2009 |
| Alltec Solutions Limited | Wholesale & retail | 2009 |
| Alphalixir Limited | Wholesale & retail | 2025 |
| Alsa Networks Limited | Real estate | 2010 |
| Alter FM Ltd | Construction | 2021 |
| AMA Decorating Limited | Construction | 2014 |
| Amaterasu Reiki Limited | Other services | 2025 |
| Amberin Ltd | Other services | 2026 |
| AMT Property Lettings Ltd | Real estate | 2024 |
| Andrew Bowtle Accountancy Services Limited | Professional & scientific | 2017 |
| Andy's Aggregate & Site Services Limited | Transport & logistics | 2025 |
| Ankor Trading UK Ltd | Wholesale & retail | 2025 |
| Annie's Ibiza Ltd | Wholesale & retail | 2020 |
| Annie's London Ltd | Wholesale & retail | 2019 |
| Annie's New York Store Holdings Limited | Financial services | 2025 |
| Annie's US Online Holdings Limited | Wholesale & retail | 2022 |
| AP Healthcare Consultancy Ltd | Health & social care | 2022 |
| Apollo Stone Properties Limited | Real estate | 2017 |
| Apsley Property Solutions Ltd | Construction | 2019 |
| Aquapro Cleaning Limited | Administrative & support | 2024 |
| Aragon Retirement Properties Limited | Real estate | 2024 |
| Araxa Capital Ltd | Financial services | 2013 |
| Arcj Distribution Ltd | Other services | 2021 |
| Argent Demolition Limited | Construction | 2011 |
| Argo Publishing Limited | Information & communication | 2004 |
| Argyle Management Limited | Real estate | 2018 |
| Argyle SQ Limited | Construction | 2018 |
| Arlen Construction Ltd | Construction | 2021 |
| ASH and Embers Limited | Wholesale & retail | 2003 |
| Ashingdon Gardens (Block a) Management Company Limited | Households | 1991 |
| Asker Property Developments Limited | Real estate | 2021 |
| Aspire EPS Ltd | Education | 2020 |
| Associated Group Services Limited | Manufacturing | 2000 |
| Avla Ltd | Real estate | 2013 |
| Axis Locks Ltd | Other services | 2026 |
| B & B Equine Limited | Agriculture & fishing | 2004 |
| B & I Protection & Control Ltd | Administrative & support | 2003 |
| B&G Plastering Services Ltd | Construction | 2022 |
| B.T's Archive Limited | Administrative & support | 2004 |
| B.T. Hollington Limited | Other services | 1982 |
| Ballroom Giant Consultancy Limited | Professional & scientific | 2024 |
| Bamm Enterprise Ltd | Wholesale & retail | 2020 |
| Barclay Court Flat Management Company Limited | Households | 1993 |
| Barclay Wolf Limited | Wholesale & retail | 2016 |
| Barley Court Limited | Households | 2026 |
| Bassett Building Company Limited | Construction | 2014 |
| Bdacc Pubs Limited | Manufacturing | 2023 |
| BE Squared Presents Ltd | Professional & scientific | 2026 |
| Bear Care 1 Limited | Health & social care | 2023 |
| Bear Care Group Holdings Limited | Financial services | 2025 |
| Bear Care Group Limited | Professional & scientific | 2025 |
| Bear Finance Ltd | Financial services | 2025 |
| Beechwood Property Developments Ltd | Real estate | 2011 |
| Bennett House Management Company Limited | Real estate | 2018 |
| Bentleigh Court Limited | Households | 2002 |
| Bergholt Building Services Limited | Construction | 2008 |
| Berkshire TCG Ltd | Wholesale & retail | 2023 |
| Bernard C Living Estates Ltd | Extraterritorial | 2018 |
| Best Bargains Essex Limited | Wholesale & retail | 2024 |