| City Gate RTM Company Limited | Households | 2010 |
| City Tower Cranes Limited | Administrative & support | 2020 |
| Citywyde Limited | Information & communication | 2019 |
| CJR Group UK Limited | Financial services | 2024 |
| Cohesis Limited | Information & communication | 1987 |
| Construx Building & Maintenance Ltd | Construction | 2018 |
| Corporal Alliance Limited | Real estate | 2010 |
| Cosac Transport Limited | Transport & logistics | 2021 |
| Cosbo Limited | Wholesale & retail | 2017 |
| Court Clerk Services Limited | Administrative & support | 2017 |
| Cranes 2000 Holdings Ltd | Real estate | 2020 |
| Crcdriver Ltd. | Transport & logistics | 2016 |
| Crete Shipping Limited | Transport & logistics | 2017 |
| Crown Country Homes Ltd | Construction | 1998 |
| Crowne Consultancy Limited | Administrative & support | 2012 |
| D&D Next Ltd | Transport & logistics | 2017 |
| D&N Protection Services Ltd | Administrative & support | 2019 |
| Dacap Solutions Limited | Information & communication | 2017 |
| Daraceemi Limited | Professional & scientific | 2022 |
| Dasmear Limited | Construction | 2019 |
| David Hutchinson Ltd | Hospitality | 2021 |
| Dazzling Parties Ltd | Hospitality | 2022 |
| Decor DE FAB Ltd | Hospitality | 2020 |
| Deep Vision Legacy Ventures Ltd | Administrative & support | 2024 |
| Deltashor Ltd | Administrative & support | 2021 |
| DEM Fs&I Ltd | Hospitality | 2021 |
| Demoores Ltd | Administrative & support | 2016 |
| DENB12 Limited | Transport & logistics | 2020 |
| DIM T Limited | Extraterritorial | 2003 |
| DIM- Blisston &Co Limited | Professional & scientific | 2012 |
| Dimemo Limited | Transport & logistics | 2005 |
| Dinas Style Ltd | Administrative & support | 2018 |
| Direct on Time Limited | Transport & logistics | 2015 |
| Divine Resources Limited | Professional & scientific | 2008 |
| DJ Lettings Ltd | Real estate | 2018 |
| DM Kawalec Trans Ltd | Transport & logistics | 2020 |
| DNM Investment Group Limited | Financial services | 2024 |
| Dolly Ventures Ltd | Health & social care | 2019 |
| Dominic Trans Limited | Transport & logistics | 2015 |
| Dragos & SON Ltd | Transport & logistics | 2018 |
| Dressmakeruk Limited | Wholesale & retail | 2019 |
| Dreton Home Extensions Ltd | Construction | 2014 |
| DRW Formations Ltd | Transport & logistics | 2019 |
| DSC Management Ltd | Professional & scientific | 2023 |
| Dseed Property Services Ltd | Real estate | 2020 |
| Earls Asset Holdings Ltd | Financial services | 2025 |
| Earlstoke Laundry Services Ltd | Other services | 2020 |
| Easton Consultancy Services Limited | Extraterritorial | 2010 |
| Easton Fire Company Limited | Construction | 2005 |
| Ec&J Limited | Construction | 2014 |
| Eden Paradise Limited | Agriculture & fishing | 2017 |
| Edile Holdings Limited | Real estate | 2020 |
| Electrical Elite Services Ltd | Construction | 2024 |
| Elite Fire Sprinklers Ltd | Construction | 2021 |
| Elite Project Services Limited | Construction | 2018 |
| Ellisam Holdings Limited | Administrative & support | 1982 |
| Embassy Roofing Services Ltd | Construction | 2013 |
| Embassy Site Services (London) Ltd | Professional & scientific | 2014 |
| Embassy Site Services UK Limited | Construction | 2010 |
| Emil Rapusta Ltd | Transport & logistics | 2019 |
| Emiline Limited | Construction | 2014 |
| Empowa Ltd | Administrative & support | 2015 |
| Engine Parts (U.K.) Limited | Wholesale & retail | 1992 |
| EPL Services Limited | Water & waste | 2026 |
| Equinox Residents Management Company Limited | Real estate | 2012 |
| Erojen Ltd | Information & communication | 2014 |
| ESG (Purfleet) Limited | Administrative & support | 2021 |
| ESJ Travel Limited | Administrative & support | 2020 |
| Essex Electrical Services Limited | Other services | 1993 |
| Essex Pallets Ltd | Water & waste | 2020 |
| Essex Pizzeria Ltd | Hospitality | 2018 |
| Essex Tanker Services Limited | Extraterritorial | 2015 |
| Essex Tankers Limited | Transport & logistics | 2008 |
| Essex Tyre Recycling Ltd | Water & waste | 2019 |
| Euro Freight Services Limited | Transport & logistics | 1996 |
| Everton Wright Limited | Arts & recreation | 2000 |
| Excel Focus Limited | Other services | 2016 |
| F.A.S.T Makeup Limited | Other services | 2015 |
| Favour Consulting Services Limited | Health & social care | 2012 |
| FB DN32 Ltd | Real estate | 2019 |
| FG. Global Financial Group Ltd | Professional & scientific | 2018 |
| Fieldhouse Construction Ltd | Construction | 2009 |
| Finley James Holdings Limited | Financial services | 2022 |
| First Group National Ltd | Manufacturing | 2019 |
| Firstcrown Homes Ltd | Real estate | 2026 |
| Fiscal PAY Limited | Construction | 2025 |
| Flexytech Ltd | Information & communication | 2014 |
| Flob Limited | Other services | 2018 |
| Fortis EV Ltd | Extraterritorial | 2022 |
| Fortis Foundations Civil Engineering Ltd | Construction | 2020 |
| Fountain Waters PVT Ltd | Health & social care | 2019 |
| Frogmore Investments Ltd | Real estate | 2022 |
| FTS Asset Group Ltd | Real estate | 2025 |
| FTS Group (London) Limited | Professional & scientific | 2013 |
| FTS Haulage Ltd | Transport & logistics | 2014 |
| FTS Recruitment Solutions Limited | Administrative & support | 2013 |
| FTS Warehousing Ltd | Transport & logistics | 2024 |
| Funag Limited | Professional & scientific | 2014 |
| Future Delta Ltd | Real estate | 2021 |
| G&G Properties (Essex) Ltd | Real estate | 2020 |