| 'Threestone Developments' Limited | Real estate | 2017 |
| 1 to 1 Services Limited | Construction | 1995 |
| 1-55 Conway Gardens RTM Company Limited | Real estate | 2023 |
| 105B Cambridge Road Management Company Limited | Real estate | 2022 |
| 11 ST Charles Road Residents Limited | Extraterritorial | 2020 |
| 1135 Srcl Limited | Health & social care | 2023 |
| 122-124 Blackstock Road Limited | Households | 2015 |
| 16 Connaught AVE Limited | Households | 1992 |
| 169-207 Conway Gardens RTM Company Limited | Households | 2018 |
| 181 West Heath Road Ltd | Construction | 2016 |
| 19 Hillbury Road Freeholders Limited | Households | 1993 |
| 1ST Choice Ixbrl Limited | Information & communication | 2011 |
| 1ST Expert Limited | Other services | 2014 |
| 2 Penfold Road RTM Company Limited | Households | 2018 |
| 20TH Century Builders Ltd | Construction | 2022 |
| 24/7 Elite Group Ltd | Construction | 2022 |
| 270 HCR RTM Company Limited | Households | 2021 |
| 270206 Limited | Administrative & support | 2026 |
| 2HAIG Ltd | Real estate | 2023 |
| 2HEAR Ltd | Health & social care | 2025 |
| 3 Circles Management Ltd | Professional & scientific | 2025 |
| 3 Diamond Events Ltd | Other services | 2019 |
| 31-35 Honey Lane Freehold Limited | Households | 2021 |
| 316 Ltd | Manufacturing | 2025 |
| 33 Entertainment Group Holdings Limited | Financial services | 2025 |
| 33 Entertainment Group London Ltd | Arts & recreation | 2016 |
| 3D Acad Ltd | Administrative & support | 2009 |
| 3D Communications Limited | Real estate | 2000 |
| 4 Your Benefit Ltd. | Other services | 2016 |
| 46 Northdown Street Limited | Households | 2003 |
| 48 Frognal Management Services Limited | Real estate | 1991 |
| 4BUSINESS Support Ltd | Professional & scientific | 2014 |
| 4U Accountants Ltd | Financial services | 2016 |
| 5 Elements Combat Academy Limited | Arts & recreation | 2021 |
| 55 Hoxton Property Limited | Real estate | 2016 |
| 6 Portland Rise (Freehold) Limited | Households | 2016 |
| 64-70 Wilshire Avenue RTM Company Limited | Households | 2017 |
| 85 Craigdale Road Freehold Limited | Households | 2023 |
| 88 Florence Road Management Company Limited | Administrative & support | 2006 |
| 9 Frame GIN Consulting Limited | Professional & scientific | 2017 |
| 99 DRY Cleaners and Laundrette Ltd | Other services | 2026 |
| A & P Supplies Limited | Transport & logistics | 1987 |
| A & R Hospitality Ltd | Hospitality | 2017 |
| A Karimi Limited | Professional & scientific | 2016 |
| A Mcveigh Consultancy Ltd | Professional & scientific | 2019 |
| A Mcveigh Consulting Ltd | Professional & scientific | 2025 |
| A P Leggett Transport Ltd | Transport & logistics | 2020 |
| A R Building Installations Limited | Construction | 2016 |
| A R Hillman Ltd | Information & communication | 2008 |
| A R Penn Limited | Construction | 2009 |
| A Taste of the Country Limited | Hospitality | 2025 |
| A&F Prestige Properties Ltd | Real estate | 2024 |
| A&M Rotary Ltd | Manufacturing | 2013 |
| A-Team Ltd | Arts & recreation | 2025 |
| A. & S. Coker Ltd | Construction | 2006 |
| A.G Farm Services Ltd | Agriculture & fishing | 2025 |
| A.J. Donald Roofing Services Ltd | Other services | 2005 |
| A.M. - P.M. Iron Furnishings Limited | Wholesale & retail | 2001 |
| A.S.M. Property Limited | Real estate | 2020 |
| A.W. Heat Pump Services Limited | Manufacturing | 2012 |
| A1 Lettings Limited | Real estate | 2009 |
| A12 Logistics Limited | Transport & logistics | 2023 |
| A2B Catering Equipment Limited | Hospitality | 2000 |
| AA Dog Rescue Animal Angels Veterinary Clinic | Professional & scientific | 2023 |
| AA Dog Rescue Spain | Other services | 2023 |
| AA Surveying Limited | Professional & scientific | 2025 |
| AAC Essex Group Holdings Limited | Financial services | 2025 |
| AAC Essex Ltd | Administrative & support | 2023 |
| AAL Travel Ltd | Transport & logistics | 2023 |
| Aaron Matthews Bricklaying Ltd | Construction | 2018 |
| Aatrus Limited | Information & communication | 2024 |
| AB Admin Solutions Ltd | Administrative & support | 2021 |
| Abacus Canal Road Ltd | Real estate | 2025 |
| Abacus Cleveland Ltd | Real estate | 2025 |
| Abacus ELY Ltd | Real estate | 2026 |
| Abacus New Market Ltd | Real estate | 2025 |
| Abacus Pavillion Ltd | Real estate | 2024 |
| Abacus Prime Limited | Real estate | 2024 |
| Abacus Stuart House Ltd | Real estate | 2024 |
| Abbey Roller Shutters & Security Products Ltd | Other services | 2010 |
| Abbeystone Management Limited | Real estate | 2005 |
| Abbott Shopfittings Limited | Administrative & support | 2010 |
| ABC AID Limited | Administrative & support | 2009 |
| ABC Financial Services (Essex) Limited | Financial services | 2006 |
| ABI Hagger Transport Ltd | Transport & logistics | 2026 |
| Aboutme Care Services Ltd | Health & social care | 2022 |
| Abridge Systems Limited | Information & communication | 2005 |
| AC Vending Limited | Administrative & support | 2017 |
| Acacia Funeral Homes Limited | Real estate | 2024 |
| Accelerate Graphics (UK) Limited | Other services | 2000 |
| Accola Services Ltd | Professional & scientific | 2022 |
| Accountancy Exam Masters Holdings Ltd | Financial services | 2023 |
| Accountancy Exam Masters Ltd | Education | 2016 |
| Accountancy People 4U Limited | Administrative & support | 2009 |
| Ace and Rose Ltd | Arts & recreation | 2023 |
| Ace Auto Salvage Limited | Wholesale & retail | 2022 |
| Ace Group Services Ltd | Administrative & support | 2011 |
| Ace Home Interiors Limited | Construction | 2022 |
| Ace Services Manningtree Limited | Wholesale & retail | 2024 |
| ACH Management Consultancy Services Limited | Professional & scientific | 2022 |