| Edusafe Solutions Limited | Construction | 2024 |
| Egcg Ltd | Administrative & support | 2015 |
| Ejdcarpentry&Construction Ltd | Construction | 2025 |
| Electrical Consultancy Services Limited | Construction | 2008 |
| Electrical Plus Services Limited | Energy | 2016 |
| Electus Experience Limited | Administrative & support | 2019 |
| Elegance (Concierge) Limited | Other services | 2022 |
| ELF Consulting Limited | Professional & scientific | 2009 |
| Elite Electrical (Essex) Limited | Construction | 2014 |
| Elito Limited | Professional & scientific | 2020 |
| ELM Interiors (London) Limited | Construction | 2015 |
| Elstar Construction Ltd | Construction | 2025 |
| EM Skills Enterprise CIC | Education | 2016 |
| EM Tuition Ltd | Education | 2021 |
| Ember Construction Consultants Ltd | Construction | 2000 |
| Emma Ainscough Interior Design Ltd | Professional & scientific | 2022 |
| Empowered Crystals Limited | Wholesale & retail | 2016 |
| Empress Builders Ltd | Construction | 2026 |
| Empress of Lashes Ltd | Wholesale & retail | 2023 |
| Empressive Property Limited | Real estate | 2023 |
| Encoded Media (UK) Limited | Information & communication | 2005 |
| Epping Ongar Railway Volunteer Society Limited | Other services | 2024 |
| EPS Renewables Ltd | Construction | 2025 |
| Equanimity Capital Limited | Real estate | 2020 |
| Eruption Radio Ltd | Information & communication | 2019 |
| Esong Ltd | Professional & scientific | 2012 |
| Essex Artificial Grass Limited | Administrative & support | 2015 |
| Essex Estate Planning Legal Services Limited | Other services | 2015 |
| Essex Floors Ltd | Construction | 2021 |
| Essex Golf Studio Limited | Arts & recreation | 2026 |
| Essex KOI Company Limited | Administrative & support | 2006 |
| Essex Metal Finishers Ltd | Manufacturing | 2022 |
| Essex Nights OUT Limited | Arts & recreation | 2020 |
| Essex Property Limited | Real estate | 2024 |
| Essex Senior Care Limited | Other services | 2012 |
| Essex Spice Ltd | Hospitality | 2013 |
| Essx Estates Ltd | Real estate | 2025 |
| ET FUN Ludos Ltd | Hospitality | 2021 |
| Etmaco Limited | Real estate | 2024 |
| Eureka Tutoring Ltd | Education | 2015 |
| Ever Drive Limited | Extraterritorial | 2005 |
| Evilis Ltd | Information & communication | 2013 |
| Excel Premier Packaging Ltd | Administrative & support | 2023 |
| Experience (International) Limited | Administrative & support | 2004 |
| Experience Business Group Limited | Professional & scientific | 2019 |
| F J Bosworth & Sons Limited | Agriculture & fishing | 2025 |
| F.A. Contractors (Essex) Limited | Construction | 2019 |
| F.R. Barton & SON Limited | Administrative & support | 2009 |
| F1 Personnel Limited | Administrative & support | 2000 |
| Fairbank Estates Ltd | Real estate | 2021 |
| Falco Building Services Ltd | Construction | 2019 |
| Fancentric Ltd | Professional & scientific | 2025 |
| Fanfare Building Ltd | Households | 2011 |
| Fanview Ltd | Arts & recreation | 2023 |
| Farmer Property Group Ltd | Real estate | 2025 |
| Fenix Recruitment Solutions Ltd | Administrative & support | 2021 |
| Fennings International UK Ltd | Administrative & support | 2026 |
| Fennings International US Ltd | Administrative & support | 2026 |
| Finance One Limited | Financial services | 2004 |
| Finer Contours Limited | Other services | 2018 |
| Fire & Stove Installations Ltd | Construction | 2025 |
| Fit OR FIX Window Solutions Ltd | Construction | 2022 |
| FJ Contracts Ltd | Construction | 2024 |
| Flesher&Butt Limited | Wholesale & retail | 2024 |
| Flexible Fire Protection Limited | Construction | 2015 |
| Florence Henry Properties Ltd | Real estate | 2025 |
| Flying Carpets (London) Limited | Wholesale & retail | 1994 |
| FM HR Outsourcing Ltd | Professional & scientific | 2025 |
| Food Function and Events Ltd | Hospitality | 2023 |
| Foodirect Europe Limited | Wholesale & retail | 2004 |
| Foot & Ellis-Smith Holdings Limited | Financial services | 2021 |
| Foot & Ellis-Smith Limited | Professional & scientific | 2022 |
| Ford Secretarial Limited | Administrative & support | 2007 |
| Forest Court (Loughton) Limited | Households | 2005 |
| Forest Heights Management Company Limited | Real estate | 1988 |
| Forresters Arms Limited | Hospitality | 2017 |
| Forresters Arms Public House Ltd | Hospitality | 2025 |
| Fortune 21 Properties Limited | Real estate | 2021 |
| Fortune Properties Ongar Limited | Real estate | 2022 |
| Forza 3 Limited | Real estate | 2018 |
| Four Oaks Resin Bound Driveways Essex Ltd | Administrative & support | 2022 |
| Four Wantz Management Company Limited | Households | 2000 |
| Four Your Paws Only Limited | Other services | 2023 |
| Foxtel Services Ltd | Information & communication | 2001 |
| Francis Mcbrien Ltd | Real estate | 2025 |
| Fresh Event Ltd | Hospitality | 2025 |
| Ftvm Co Ltd | Extraterritorial | 2019 |
| Funky Monk Chelmsford Ltd | Hospitality | 2024 |
| Funky Monk Dubai Ltd | Hospitality | 2025 |
| Funky Monk Dunmow Ltd | Hospitality | 2024 |
| Funky Monk Essex Ltd | Hospitality | 2022 |
| Funky Monk Events Ltd | Hospitality | 2023 |
| Funky Monk Herts Ltd | Hospitality | 2024 |
| Funky Monk Loughton Ltd | Hospitality | 2024 |
| Funky People (App) Ltd | Information & communication | 2025 |
| Fusion on Limited | Hospitality | 2022 |
| Future Aesthetika Ltd | Other services | 2021 |
| Fuze Electrical Services Limited | Construction | 2024 |
| Fwba Ltd | Health & social care | 2026 |
| Fyfield Commercial Limited | Real estate | 2024 |