| Epic Tools Limited | Other services | 2008 |
| Eppoc Ltd | Professional & scientific | 2010 |
| Equine Adventures Ltd | Agriculture & fishing | 2023 |
| Eric 77 Food Limited | Hospitality | 2026 |
| Esmo Design Limited | Wholesale & retail | 2014 |
| Essence (Lowestoft) Limited | Other services | 2006 |
| Essential Amor Ltd | Wholesale & retail | 2026 |
| Ethical Care Control and Restraint (UK) Limited | Administrative & support | 2003 |
| EU Grow Limited | Hospitality | 2026 |
| Euro Construction Auctions Limited | Construction | 2025 |
| Eurokart Limited | Wholesale & retail | 1996 |
| EV Doctor Limited | Wholesale & retail | 2023 |
| Eventful Party Supplies Ltd | Administrative & support | 2022 |
| Eventopia Party Ltd | Professional & scientific | 2019 |
| Eventuality NOW Ltd | Hospitality | 2025 |
| Evergreen Energy Ltd | Construction | 2026 |
| Everitt Management Limited | Professional & scientific | 2025 |
| Everitt Park Cafe Limited | Hospitality | 2020 |
| Every Coaching Services Limited | Arts & recreation | 2024 |
| EVF Contracts Limited | Construction | 2007 |
| Evlias Access Ltd | Construction | 2026 |
| Exceed MPR Limited | Mining & quarrying | 2016 |
| Excel Paint Finish Limited | Construction | 2008 |
| Excel Training and Consultancy Ltd | Education | 2021 |
| Excelsior House Management Company Limited | Households | 2010 |
| Excelsior Trading Limited | Professional & scientific | 2001 |
| Excelsior Trust(The) | Other services | 1982 |
| Exec Construction Limited | Construction | 2009 |
| Executive Real Estate Limited | Construction | 2018 |
| Executive Support Solutions (ESS) Ltd | Wholesale & retail | 2008 |
| Exmoor Marine Limited | Professional & scientific | 2014 |
| Expert Inspection Services Limited | Professional & scientific | 2025 |
| F & C Suffolk Ltd | Hospitality | 2021 |
| F P Cross Limited | Health & social care | 2007 |
| Fabric Flare Solutions Limited | Manufacturing | 2000 |
| Faccas Enterprises Ltd | Extraterritorial | 2022 |
| Family Finance Centre Limited | Financial services | 2005 |
| Farmland Forestry Limited | Agriculture & fishing | 2023 |
| Farout Ltd | Arts & recreation | 2019 |
| Fast on Water | Arts & recreation | 2014 |
| FAT Cat Cakery Ltd | Manufacturing | 2020 |
| Fatcatsvapes Limited | Wholesale & retail | 2015 |
| Fate & Fortune C.I.C. | Health & social care | 2025 |
| Fayad Holiday LET Limited | Real estate | 2022 |
| Fayad Medical Limited | Health & social care | 2019 |
| FB Bozhilovi Ltd | Transport & logistics | 2020 |
| Feastfolk Limited | Hospitality | 2025 |
| FEI Xiang Evergreen Limited | Hospitality | 2019 |
| FEN Court (Lowestoft) Management Company Limited | Households | 1989 |
| FEN View Lodge Limited | Health & social care | 2021 |
| Fenn Graphics Limited | Extraterritorial | 1995 |
| Ferenc Stone Ltd | Manufacturing | 2022 |
| Fern & Kraken Limited | Administrative & support | 2017 |
| Ferrano Ltd | Professional & scientific | 2022 |
| Fibeon Limited | Information & communication | 2025 |
| Field Craft Services Limited | Professional & scientific | 2016 |
| Field of Vision Community Limited | Real estate | 2000 |
| Figtree House Care Ltd | Health & social care | 2017 |
| Fine Line Fencing & Landscaping (EA) Ltd | Professional & scientific | 2026 |
| Fire Safety Suffolk Ltd | Other services | 2023 |
| First Computers (East Anglia) Limited | Wholesale & retail | 2010 |
| First Light Festival C.I.C. | Education | 2018 |
| Fish Hunter Ltd. | Agriculture & fishing | 2018 |
| Fish OUT of Water Events Limited | Arts & recreation | 2011 |
| Fishbox Rentals Limited | Real estate | 2025 |
| Fishtrack Limited | Professional & scientific | 2013 |
| Fitness Local Ltd | Arts & recreation | 2015 |
| Five One Taxis Limited | Transport & logistics | 1990 |
| Flamboyant Details Limited | Administrative & support | 2016 |
| Flame Guard Services Ltd | Professional & scientific | 2022 |
| Flamingo and Fern Ltd | Administrative & support | 2021 |
| Fleet 96 Limited | Administrative & support | 2002 |
| Fleet 96 Rentals Limited | Administrative & support | 2014 |
| Flint and Coastal Properties Limited | Real estate | 2026 |
| Flixton Lakes Limited | Mining & quarrying | 2022 |
| Floor-Less Concrete Flooring Solutions Ltd | Construction | 2023 |
| FLS Customs Ltd | Wholesale & retail | 2025 |
| Fluidpower UK Ltd | Extraterritorial | 2019 |
| Fluke Bar & Nightclub Limited | Hospitality | 2022 |
| Focused Automotive Group Ltd | Transport & logistics | 2023 |
| Food Plus B Ltd | Wholesale & retail | 2023 |
| Football Education Limited | Education | 2015 |
| Forged by Dragons Limited | Hospitality | 2020 |
| Fort 247 Ltd | Arts & recreation | 2021 |
| Fortified Formwork & Construction Ltd | Construction | 2022 |
| Forty Four Productions Limited | Administrative & support | 2018 |
| Founder.Io Ltd | Professional & scientific | 2025 |
| Four Seasons Property Developments Limited | Real estate | 2021 |
| Fourteen Twelve Ltd | Wholesale & retail | 2026 |
| Fowler Freight Services Limited | Transport & logistics | 2007 |
| FOX Civils and Groundworks Limited | Construction | 2024 |
| FOX Construction Eastern Limited | Construction | 2019 |
| FOX Corporate Ltd | Real estate | 2023 |
| FOX Group Eastern Limited | Financial services | 2025 |
| FOX Homes Eastern Limited | Construction | 2015 |
| FOX Rentals Eastern Limited | Real estate | 2025 |
| Foxatron Limited | Health & social care | 2022 |
| Foxy Devil Limited | Wholesale & retail | 2015 |
| Frank Estate Agency Limited | Real estate | 2020 |
| Frankie Seamark Ltd | Information & communication | 2024 |