| "THE Lynch" Management Limited | Households | 1988 |
| 'Po'Roperties Ltd | Real estate | 2014 |
| 10 Point Fitness Limited | Arts & recreation | 2015 |
| 101112 Ltd | Information & communication | 2025 |
| 11 Plusswot Ltd | Education | 2010 |
| 17 FO Ltd | Real estate | 2017 |
| 177-187 Bradford Street Limited | Households | 2001 |
| 1AF2 Ltd | Financial services | 2021 |
| 2-SWITCH Ltd | Professional & scientific | 2018 |
| 20 Gainsborough Limited | Construction | 2021 |
| 20 Gainsborough Management Limited | Real estate | 2024 |
| 215 London Road Development Ltd | Construction | 2022 |
| 222 Recruitment Ltd | Administrative & support | 2024 |
| 24/7 Plumbing Essex Ltd | Construction | 2025 |
| 247 Power and Data Ltd | Construction | 2013 |
| 247 Renewables Ltd | Construction | 2026 |
| 247PLUMBING and Maintenance Ltd | Construction | 2025 |
| 2AIM4 Limited | Arts & recreation | 2013 |
| 2DMATERIAL.MOVIE Ltd | Manufacturing | 2025 |
| 2DMATERIALS.INVESTMENTS Ltd | Financial services | 2025 |
| 2DMATERIALS.SOCIAL Ltd | Professional & scientific | 2025 |
| 3 Chester Road Management Company Ltd. | Households | 2015 |
| 3 Speed Holdings Limited | Financial services | 2017 |
| 3 Speed Worldwide Services Limited | Transport & logistics | 2003 |
| 31 Rose Valley Management Co. Ltd | Real estate | 1998 |
| 360 Data Center Ltd | Information & communication | 2023 |
| 360 Vidpro Ltd | Information & communication | 2023 |
| 3DPRINTSALL Ltd | Manufacturing | 2025 |
| 4 Generations Corporation Limited | Manufacturing | 2020 |
| 4 Square Finance Limited | Financial services | 2019 |
| 40 Clapham Road Management Limited | Households | 1995 |
| 41 to 52 Markwell Wood RTM Company Limited | Households | 2024 |
| 45-51 Bowood Road Freehold Limited | Other services | 2007 |
| 4D Fit Limited | Arts & recreation | 2018 |
| 4G Construction Ltd | Construction | 2012 |
| 5 Star Building Ltd | Construction | 2019 |
| 53 to 64 Markwell Wood RTM Company Limited | Households | 2024 |
| 55-57 Shakespeare Road RTM Company Limited | Households | 2022 |
| 57 North Financial Planning Ltd | Financial services | 2022 |
| 5LEVELS Properties Limited | Real estate | 2021 |
| 6L9CLOTHING Ltd | Wholesale & retail | 2024 |
| 7 Electrical Limited | Administrative & support | 2006 |
| 7SISTERS.MOVIE Ltd | Information & communication | 2025 |
| 7T Consulting Ltd | Administrative & support | 2014 |
| A & H Denovo Limited | Financial services | 2013 |
| A & J Lighting Solutions Limited | Manufacturing | 2008 |
| A and D W Development Limited | Construction | 2025 |
| A C L S Contracts Limited | Wholesale & retail | 2008 |
| A D Hicks Carpentry and Building Limited | Construction | 2017 |
| A H Electrical & EV Services Ltd | Manufacturing | 2021 |
| A J B Steel Products Limited | Professional & scientific | 2009 |
| A J Building Limited | Construction | 2015 |
| A J Smith Consultancy Limited | Information & communication | 2011 |
| A J Smith Defence Bureau Consultancy Limited | Information & communication | 2025 |
| A James & SON Limited | Wholesale & retail | 2015 |
| A Kemp Garden Services Limited | Administrative & support | 2008 |
| A Little Piece of Fame Limited | Wholesale & retail | 2020 |
| A M Car Services Limited | Transport & logistics | 2004 |
| A Morgan Associates Limited | Other services | 2003 |
| A N B Reporting Services Ltd | Administrative & support | 2018 |
| A N J Consultancy Ltd | Health & social care | 2016 |
| A S Splendid Interiors Limited | Professional & scientific | 2025 |
| A S Water Services Limited | Construction | 2016 |
| A Tidy Space Limited | Administrative & support | 2020 |
| A Winterton Limited | Professional & scientific | 2013 |
| A&D Chapman Plastering & Renovations Ltd | Construction | 2021 |
| A&H Maintenance Ltd | Extraterritorial | 2023 |
| A. Joy Limited | Construction | 2012 |
| A. Osborn & Sons Limited | Construction | 1924 |
| A.E.Coe & Sons, Limited | Professional & scientific | 1996 |
| A.L. Motors (Braintree) Ltd | Wholesale & retail | 2004 |
| A.R.C. Therapeutic Care Services Ltd. | Health & social care | 2021 |
| A1 Takeaway Ltd | Hospitality | 2020 |
| A340 Limited | Professional & scientific | 2016 |
| Aaba Ltd | Construction | 2014 |
| Aaran Clark Ltd | Health & social care | 2024 |
| Aarons Aerial Systems Limited | Other services | 2018 |
| Aati Architectural Limited | Manufacturing | 1984 |
| Aati Rail Limited | Manufacturing | 2012 |
| Ab-Vf Accounting & Book-Keeping Services Ltd | Professional & scientific | 2025 |
| Abacus Accountancy Group Limited | Professional & scientific | 2018 |
| Abacus Merchant Services Limited | Administrative & support | 2024 |
| Abbey Scott Integrative Psychotherapist and Counsellor Ltd | Health & social care | 2024 |
| Abbeycom Limited | Construction | 1998 |
| Abbeyfield Braintree, Bocking and Felsted Society Limited | Hospitality | 1969 |
| Abbott Property Solutions Limited | Construction | 2010 |
| Abbycon Ltd | Administrative & support | 2014 |
| Abella HR Limited | Administrative & support | 2018 |
| ABI EI Ltd | Transport & logistics | 2014 |
| ABI H & S Services Ltd | Other services | 2011 |
| Abjan Limited | Transport & logistics | 2024 |
| Abnaxus Finance Limited | Professional & scientific | 2015 |
| ABO Property Ltd | Other services | 2011 |
| Abros Computing Ltd | Information & communication | 2006 |
| ABS Solicitors Group Ltd | Professional & scientific | 2025 |
| ABS Solicitors Limited Liability Partnership | | 2011 |
| Absolute Embroidery Ltd | Wholesale & retail | 2008 |
| Absolute Health by Nurses Ltd | Health & social care | 2026 |
| Absolute Office Solutions Limited | Wholesale & retail | 2015 |
| Absolute Power Limited | Construction | 1997 |