| 1912 Productions Ltd | Arts & recreation | 2024 |
| AAA Recoveries 24/7 Ltd | Transport & logistics | 2026 |
| Abaco Transport Limited | Manufacturing | 2017 |
| Acres Pet Cremation Ltd | Professional & scientific | 2025 |
| AHB Instrument Services Ltd | Professional & scientific | 2019 |
| Ailuros Services Ltd | Professional & scientific | 2018 |
| Airsoft Supplies Global Ltd | Wholesale & retail | 2023 |
| Alan's Heating Services Ltd | Construction | 2002 |
| Albie Moore Surfacing Contractors Ltd | Administrative & support | 2026 |
| Aldridge Property Management Ltd | Real estate | 2011 |
| Allure Silk Ltd | Wholesale & retail | 2023 |
| ALS UK Motor Ltd | Wholesale & retail | 2025 |
| AMP Vehicle Services Ltd | Wholesale & retail | 2023 |
| APW Mechanical Limited | Construction | 2018 |
| Axel & Co Properties Ltd | Construction | 2025 |
| B Bridges Consultants & Co Ltd | Professional & scientific | 2025 |
| Bang Custom Paintworks Ltd | Wholesale & retail | 2023 |
| Bentley Priory Rental Ltd | Real estate | 2017 |
| Big Show Ltd | Other services | 2016 |
| Black Mountain Insulation Limited | Extraterritorial | 2013 |
| Blackwater Brewing Company Limited | Manufacturing | 2022 |
| Blackwater Building and Joinery Services Ltd | Construction | 2019 |
| Blue Chip Origin Limited | Information & communication | 2026 |
| Boiler Boiler Ltd | Construction | 2015 |
| Breeze Multimedia Limited | Information & communication | 2005 |
| BS Home Improvements Ltd | Construction | 2019 |
| Built by PXL Ltd | Information & communication | 2017 |
| Buttercup Way Utilities Limited | Construction | 2022 |
| C Aldridge Utilities Limited | Energy | 2018 |
| Calmasey Building Services Ltd | Construction | 1996 |
| Castiel Clothing Ltd | Wholesale & retail | 2024 |
| Cavendrix Advisory Limited | Information & communication | 2026 |
| CBS Woodford Ltd | Real estate | 2026 |
| Cheerstage Properties Ltd. | Hospitality | 1991 |
| Children Safeguarding Affairs Consultancy (C-Sac) Ltd | Health & social care | 2022 |
| Church View VET Clinic Ltd | Professional & scientific | 2020 |
| Churchill Marine & Cargo Surveys Limited | Administrative & support | 2003 |
| Cila Trading Limited | Wholesale & retail | 2026 |
| CK3INVEST Limited | Real estate | 2020 |
| CKS Glazing Ltd | Manufacturing | 2023 |
| Clermont Mortgage Solutions Limited | Financial services | 2023 |
| Club Elite Mark 14 Limited | Arts & recreation | 2005 |
| Concept Seat Covers Ltd | Manufacturing | 2021 |
| Cornerstone Property Management Limited | Real estate | 2018 |
| Crystal Health and Social Care Limited | Health & social care | 2017 |
| CSB Media Ltd | Information & communication | 2018 |
| CTC Services Essex Ltd | Construction | 2013 |
| Cyberphi Ltd | Information & communication | 2021 |
| D Cummins & Sons Ltd | Administrative & support | 2023 |
| D.J.Fisher(Farms)Limited | Agriculture & fishing | 1964 |
| DBM Waterproof Solutions Limited | Construction | 2020 |
| Dengie Bark Park Ltd | Agriculture & fishing | 2024 |
| Dengie Crop Driers Limited | Other services | 1968 |
| Dengie Crops Limited | Manufacturing | 1988 |
| Dengie K9-5 Ltd | Other services | 2025 |
| Dengie Plumbing Services Ltd | Construction | 2023 |
| Design 3D Solutions Ltd | Professional & scientific | 2022 |
| Diamond Shine Window Cleaning Ltd | Administrative & support | 2022 |
| Diddydots Ltd | Education | 2025 |
| Directors Dining Club Ltd | Other services | 2019 |
| DJR Building Services (South East) Limited | Construction | 2023 |
| Doors 4 YOU Limited | Construction | 2011 |
| Dwyer Homes Ltd | Construction | 2026 |
| Eagle AI Labs Ltd | Information & communication | 2024 |
| East Essex Farmers Limited | Other services | 1988 |
| East Essex Grain Marketing Limited | Agriculture & fishing | 1989 |
| East Essex Grain Store Limited | Agriculture & fishing | 1989 |
| Elect-Rick (Essex) Ltd | Construction | 2019 |
| Elizabeth Cornwell Academy Ltd | Other services | 2026 |
| Elliott Homes Ltd | Extraterritorial | 2024 |
| ELM Green Homes Limited | Real estate | 2017 |
| ELM Green Management Ltd | Real estate | 2017 |
| Essex Automation Ltd | Professional & scientific | 2022 |
| Essex Baby Limited | Information & communication | 2013 |
| Essex Barrels Ltd | Manufacturing | 2021 |
| Essex Broadband Limited | Information & communication | 2021 |
| Essex Construction Investments Limited | Construction | 2023 |
| Essex County Electrical Ltd | Construction | 2017 |
| Essex Quality Furniture Ltd | Wholesale & retail | 2023 |
| Essex Safety Consultants Limited | Public administration | 2023 |
| Eswap.Uk Limited | Extraterritorial | 1998 |
| Etheridge Elite Ltd | Education | 2024 |
| Europlaz Medical Limited | Professional & scientific | 2007 |
| Europlaz Technologies Ltd | Manufacturing | 2000 |
| Exchange House Property Limited | Construction | 2019 |
| Fawcett VA Services Ltd | Administrative & support | 2023 |
| Flag Stitch and Design Ltd. | Extraterritorial | 2002 |
| Floorgem Limited | Administrative & support | 2005 |
| FMF Property Holdings Ltd | Real estate | 2026 |
| Forever Flooring Ltd | Construction | 2024 |
| G J'S Catering Limited | Hospitality | 2003 |
| G. & J. Decorating Services Ltd | Construction | 2001 |
| G. Ferguson (Badnocks) Limited | Agriculture & fishing | 1980 |
| G.B's Contracts Limited | Construction | 2024 |
| GBS Builders & Contractors Limited | Construction | 2025 |
| GEM Drainage Limited | Water & waste | 2018 |
| Gemini Paving and Landscaping Ltd | Administrative & support | 2019 |
| GK Leisure Group Ltd | Wholesale & retail | 2010 |
| Goode Advisory Limited | Professional & scientific | 2020 |
| Goode Pakers Advisory Limited | Professional & scientific | 2025 |