| Esmer Barber Limited | Other services | 2019 |
| Esplanade Business Consultants Ltd | Professional & scientific | 1987 |
| Essence Aesthetics Ltd | Other services | 2023 |
| Essex and Suffolk Engineering (Lifts) Limited | Manufacturing | 2022 |
| Essex Architectural Planning Limited | Professional & scientific | 2023 |
| Essex Cash and Carry Ltd | Wholesale & retail | 2026 |
| Essex Construction & Maintenance Limited | Administrative & support | 2017 |
| Essex Divers Limited | Education | 2022 |
| Essex Doggy Day Care Ltd | Other services | 2025 |
| Essex Double Glazing Solutions Limited | Construction | 2022 |
| Essex Facility Services Ltd | Professional & scientific | 2018 |
| Essex Lads Limited | Construction | 2023 |
| Essex Marine Limited | Professional & scientific | 2004 |
| Essex Marquees and Events Limited | Other services | 2019 |
| Essex Motor Group Limited | Wholesale & retail | 2023 |
| Essex Sparkle Squad Ltd | Administrative & support | 2025 |
| Essex Ultrasound & Medical Services Limited | Health & social care | 2006 |
| Estuary Design Limited | Professional & scientific | 1993 |
| Estuary Education Limited | Education | 2012 |
| Estuary Medical Ltd | Health & social care | 2015 |
| Estuary Supplies Ltd | Wholesale & retail | 2025 |
| Etrog Estates Limited | Real estate | 2021 |
| EU45 Antifoul Ltd | Manufacturing | 2015 |
| Evansmith (Builders) Limited | Construction | 2006 |
| Eventrentals Venture Ltd | Hospitality | 2023 |
| Evergreen Care Services Provider Ltd | Health & social care | 2022 |
| Everything Essex Ltd | Other services | 2025 |
| Everything Scrumptious Ltd | Manufacturing | 2023 |
| EW and MV Limited | Real estate | 2024 |
| Exact Choice Ltd | Wholesale & retail | 2024 |
| Exclusive Coins Limited | Professional & scientific | 2015 |
| Exclusive Padel Ltd | Arts & recreation | 2025 |
| Executive Cleaning & Maintenance Services Limited | Administrative & support | 2020 |
| Executive Gardening & Maintenance Limited | Administrative & support | 2020 |
| Explorers Nurseries Essex Limited | Education | 2026 |
| Exports of Goodies Limited | Wholesale & retail | 2013 |
| Exquisite Support and Property Management Ltd | Real estate | 2023 |
| Exquisiteearringsco Ltd | Wholesale & retail | 2025 |
| Exterior Supreme Clean Ltd | Administrative & support | 2026 |
| F & F Utilities Limited | Construction | 2018 |
| F&J Property Associates Limited | Real estate | 2022 |
| F. Brazil Reinforcements Limited | Manufacturing | 2007 |
| F. P. Alarm Systems Limited | Professional & scientific | 2017 |
| Fable Brewery Limited | Manufacturing | 2025 |
| Falcon Consulting Services Ltd | Professional & scientific | 2020 |
| Fashionus Limited | Wholesale & retail | 2021 |
| Fast Progress Ltd | Education | 2020 |
| Fast Progress Tuition Ltd | Education | 2019 |
| Fast SS Ltd | Transport & logistics | 2022 |
| Fastglobe (Mastics) Limited | Construction | 1985 |
| Fastglobe Limited | Construction | 2011 |
| FAT Lettuce Ltd | Health & social care | 2018 |
| Faust&Co Security Ltd | Information & communication | 2023 |
| Favourite Grill Ltd | Hospitality | 2025 |
| Felix International Limited | Wholesale & retail | 2025 |
| Felmac Metals Ltd | Wholesale & retail | 2023 |
| Festival Dreamers Racing Club Ltd | Arts & recreation | 2024 |
| FFW Site Services Ltd | Administrative & support | 2022 |
| Fibco Properties Limited | Real estate | 2004 |
| Filmreel Transport Ltd | Transport & logistics | 2021 |
| Fils Tackle Ltd | Wholesale & retail | 2021 |
| Finchbow Limited | Financial services | 2023 |
| Fineline Paving & Property Maintenance Limited | Construction | 2024 |
| Finsgate Contracting Limited | Administrative & support | 2024 |
| First Choice Fire Protection Ltd | Construction | 2023 |
| First Repairs Ltd | Other services | 2014 |
| Firstclass Staff Ltd | Extraterritorial | 2008 |
| Fishgo Limited | Hospitality | 2026 |
| Fitevolve Ltd | Information & communication | 2025 |
| Fitsync Limited | Information & communication | 2025 |
| Fixright Property Co Ltd | Professional & scientific | 2026 |
| FK Utilities (Essex) Ltd | Construction | 2026 |
| Flair Fine Foods Ltd | Wholesale & retail | 2014 |
| Flakkyjojo Limited | Health & social care | 2014 |
| Flame Stoppers Ltd | Construction | 2017 |
| Flannels Services Limited | Administrative & support | 2020 |
| Flash Design & Print Limited | Wholesale & retail | 2021 |
| Flash Property Holdings Limited | Real estate | 2014 |
| Fleet Lodge Management Company Limited | Real estate | 2005 |
| Fleetmanagementsolutions Ltd | Construction | 2019 |
| Flexy Meals Limited | Manufacturing | 2020 |
| Flightless Bird Installations Limited | Administrative & support | 2011 |
| Flightless Bird Properties Limited | Real estate | 2024 |
| Floortech Ltd | Construction | 2012 |
| Florentina Homes Limited | Real estate | 2020 |
| Florin Mixer Ltd | Transport & logistics | 2014 |
| Flowkiwia Limited | Other services | 2025 |
| FLS Management Services Limited | Construction | 2012 |
| Fluffy FOX Limited | Real estate | 2026 |
| Flynn Films Ltd | Information & communication | 2023 |
| FMB Event Rentals Limited | Administrative & support | 2022 |
| FMD Project Solutions Ltd | Construction | 2016 |
| Foodie Love HUT Ltd | Wholesale & retail | 2024 |
| Fortis Partitions Ltd | Extraterritorial | 2019 |
| Fotelite Ltd | Health & social care | 2022 |
| Foundation Media Limited | Professional & scientific | 2016 |
| Foundry Tyres Essex Limited | Wholesale & retail | 2016 |
| Foursquare Gospel Church (Alithia Centre) Plaistow Limited | Extraterritorial | 2008 |
| Frangel Limited | Extraterritorial | 2020 |
| Frantastic Childcare Limited | Health & social care | 2024 |