| Eltel Networks Ltd | Information & communication | 2025 |
| Elton House (Norfolk Road) Limited | Households | 2007 |
| Emicca Holdings Ltd | Professional & scientific | 2019 |
| Emjay Associates Ltd | Professional & scientific | 2013 |
| Emma Smith Hygienist Services Limited | Health & social care | 2005 |
| Emma Wood Interiors Ltd | Professional & scientific | 2019 |
| Emmanuel Medical Services Limited | Health & social care | 2026 |
| Empowered Beauty Solutions Ltd | Professional & scientific | 2018 |
| Empress Gardens Management Company Limited | Households | 2024 |
| Empress Leisure Ltd | Hospitality | 2013 |
| Emsdale Residential Ltd | Real estate | 2013 |
| Enchanted KF Ltd | Information & communication | 2024 |
| END to END Telecoms Limited | Information & communication | 2018 |
| Energie Genie Limited | Manufacturing | 2023 |
| Energize Cleaning Limited | Administrative & support | 2024 |
| Energize Group Limited | Professional & scientific | 2025 |
| Energize Residential Limited | Construction | 2025 |
| Energize Solar Limited | Construction | 2022 |
| Energy Creation Experts Ltd | Construction | 2014 |
| ENG Retails Ltd | Wholesale & retail | 2020 |
| Engine Management Services (Sussex) Limited | Wholesale & retail | 2015 |
| England Classics Limited | Administrative & support | 2013 |
| Enjaze Ltd | Construction | 2018 |
| Enlightened HR Limited | Professional & scientific | 2004 |
| Enterprise Data Services Limited | Information & communication | 2005 |
| Enterprise Payment Solutions Limited | Information & communication | 2011 |
| Envirolease Limited | Financial services | 2007 |
| Environmental Pest Management Ltd | Administrative & support | 2021 |
| EP Noor Limited | Hospitality | 2026 |
| EP Perfect Pizza Ltd | Hospitality | 2023 |
| Epeng Group Limited | Professional & scientific | 2023 |
| Epiere Academy Limited | Education | 2023 |
| Epiere Skin Ltd | Health & social care | 2021 |
| Epiphany Engineering Ltd | Professional & scientific | 2010 |
| EPP Arundel Ltd | Transport & logistics | 2020 |
| Equaluxe Therapy Ltd | Agriculture & fishing | 2025 |
| Equine Strategies Ltd | Agriculture & fishing | 2022 |
| ERJ Recruitment Limited | Administrative & support | 2026 |
| Esclusiva Ltd | Wholesale & retail | 2023 |
| Essential Hairdresser Limited | Other services | 2021 |
| Essex and Sussex Building Ltd | Construction | 2025 |
| Estuary Wellness Ltd | Wholesale & retail | 2025 |
| Europesport Ltd | Wholesale & retail | 2024 |
| Euroxpress Commercial Removals Ltd | Transport & logistics | 2022 |
| Euroxpress Industrial Ltd | Transport & logistics | 2022 |
| Euroxpress International Limited | Wholesale & retail | 2009 |
| Euroxpress Storage Ltd | Transport & logistics | 2022 |
| Evenden Ltd | Real estate | 2022 |
| Evening Star Charters Ltd | Agriculture & fishing | 2026 |
| Evolv Global Limited | Administrative & support | 2025 |
| Evolve Contractors Ltd | Construction | 2019 |
| Evolve Online Ltd | Information & communication | 2008 |
| Excalibur Training Services Limited | Information & communication | 1986 |
| Exeter House (Littlehampton) RTM Company Limited | Households | 2016 |
| Experience Insight Limited | Professional & scientific | 2012 |
| Expert Pavers Ltd | Administrative & support | 2025 |
| Expert Pension Solutions Ltd | Financial services | 2018 |
| EXPO44 Limited | Information & communication | 2024 |
| Export Angels Ltd | Administrative & support | 2023 |
| Express Sales Limited | Wholesale & retail | 2020 |
| Extreme Electrical Ltd | Manufacturing | 2004 |
| FAB Electrical Contractors Ltd | Construction | 2020 |
| Faidiga UK Transport Ltd | Transport & logistics | 2016 |
| Fairlawns RTM Company Limited | Households | 2010 |
| Fairway Gardens (Rustington) Management Company Limited | Households | 2023 |
| Faith Telecommunications Ltd | Wholesale & retail | 2016 |
| Falcon Electrical Systems Limited | Manufacturing | 2003 |
| Families Sussex Magazine Limited | Information & communication | 2018 |
| Famous City Littlehampton Limited | Hospitality | 2026 |
| Fanlight Limited | Real estate | 2011 |
| Farmbarn Property Ltd | Construction | 2024 |
| Farmside Residents Association Limited | Real estate | 1964 |
| Fashion AD Ltd | Wholesale & retail | 2026 |
| Fast Trading Limited | Wholesale & retail | 2014 |
| Fastline Construction Limited | Construction | 1988 |
| Fastnetweb Ltd | Information & communication | 2016 |
| Fate Capital Limited | Financial services | 2026 |
| Favourite Pizza Littlehampton Ltd | Hospitality | 2019 |
| FD Outsourcing Limited | Professional & scientific | 1992 |
| Feast & Flame Ltd | Hospitality | 2025 |
| Fellas of Worthing Limited | Other services | 2002 |
| Fenners Court Associates Limited | Households | 2005 |
| Fenners Court Management Company Limited | Households | 1974 |
| Fentech UK Holdings Limited | Financial services | 2023 |
| Ffynches Lodge Management Company Limited | Households | 1969 |
| Fiddlers Green Leisure Limited | Hospitality | 2021 |
| FIG Garden Design Ltd | Professional & scientific | 2022 |
| Fight OR Flight Limited | Professional & scientific | 2019 |
| Finance Box Limited | Professional & scientific | 2015 |
| Finch's Independent Financial Advisers Limited | Financial services | 1987 |
| Fincham Court Residents Association Limited | Households | 1975 |
| Find Your Pink Ltd | Wholesale & retail | 2025 |
| Fine Art Decorating Ltd | Construction | 2012 |
| Fiona Howard Limited | Professional & scientific | 2010 |
| Fire Fighters Charity | Other services | 2002 |
| Fire Fighters Trading Limited | Wholesale & retail | 1999 |
| Firestarter Software Ltd | Information & communication | 2011 |
| First Fruits Ltd | Other services | 2008 |
| First Impressions UK Limited | Administrative & support | 2007 |
| First Service Global Limited | Real estate | 2016 |