| Eleven Eleven Recruitment Ltd | Administrative & support | 2022 |
| Eleventh Green Ltd | Administrative & support | 2016 |
| Elite Business Projects Limited | Professional & scientific | 2009 |
| Elite Gym Maintenance Ltd | Manufacturing | 2024 |
| Elite Pontoon Hire Limited | Transport & logistics | 2022 |
| Ellie Wiseman Ltd | Other services | 2023 |
| Elliott and Harding Ltd | Construction | 2022 |
| Ellipsis Financial Ltd | Professional & scientific | 2025 |
| Elmham Financial Limited | Financial services | 2014 |
| Elra Catering Ltd | Hospitality | 2024 |
| Embrace & Glow Ltd | Other services | 2026 |
| EMC Anglia Ltd. | Real estate | 1965 |
| Emerald Direct Consultancy Ltd | Extraterritorial | 2011 |
| EMH Property Solutions Limited | Administrative & support | 2012 |
| Emotive Sound & Light Ltd | Administrative & support | 2010 |
| Empowered Personnel Ltd | Administrative & support | 2021 |
| Enclave Films Ltd | Information & communication | 2017 |
| Endpoint IT Ltd | Information & communication | 2019 |
| Endpoint Tech Ltd | Information & communication | 2021 |
| Engrithm Limited | Wholesale & retail | 2019 |
| Enhanced Clinical and Training Services Ltd | Education | 2020 |
| Enlighten Hair and Beauty Limited | Other services | 2010 |
| Entowatch Ltd | Professional & scientific | 2024 |
| Epicpmo Ltd | Information & communication | 2025 |
| Erwin Court Management Company Limited | Real estate | 2006 |
| Essence Foods Limited | Manufacturing | 1995 |
| Etch Publishing Ltd | Information & communication | 2024 |
| Eurobrix Limited | Professional & scientific | 2007 |
| Evalesco Limited | Agriculture & fishing | 2014 |
| Evendell Solutions Limited | Information & communication | 2011 |
| Evergreen Residential Lettings Limited | Real estate | 2004 |
| Everhard Electrical Limited | Real estate | 1986 |
| Everyday Living Healthcare Ltd | Health & social care | 2022 |
| Evolve Digital Marketing Ltd | Information & communication | 2022 |
| Express Coffee Cars Limited | Hospitality | 2006 |
| Express Electrical Supplies Ltd | Wholesale & retail | 2011 |
| Expressfish Ventures Ltd | Hospitality | 2023 |
| EZI - DOR Ltd | Construction | 2020 |
| F H Rigging & Stage Services Ltd | Construction | 2011 |
| F.S. Dann & SON Limited | Agriculture & fishing | 1965 |
| F2E Translation Ltd | Professional & scientific | 2015 |
| Fairgate Twenty Ltd | Manufacturing | 2023 |
| Fairland Garage Holdings Ltd | Administrative & support | 2024 |
| Fairland Garage Ltd | Administrative & support | 2012 |
| Fairview Court Limited | Real estate | 2007 |
| Fairview Court Management Company Limited | Households | 1985 |
| Fakenham Food Service Limited | Wholesale & retail | 2015 |
| Fakenham Rugby Union Football Club Limited | Arts & recreation | 2012 |
| Family Movers Limited | Transport & logistics | 2017 |
| Fan-Doggy-Dozi Limited | Education | 2008 |
| Fantastic Fabrications Limited | Manufacturing | 2017 |
| Farm Security Ltd | Administrative & support | 2025 |
| Farnham Farms Limited | Agriculture & fishing | 1989 |
| Felton Fundraising and Appeals Ltd | Administrative & support | 2006 |
| Festival at the Edge | Education | 2000 |
| FG Fitness Education Ltd | Education | 2022 |
| FG Personal Training Ltd | Arts & recreation | 2019 |
| Fieldings Business Services Limited | Professional & scientific | 2023 |
| Filtuzz Limited | Professional & scientific | 2026 |
| Fire Doors Plus Ltd | Extraterritorial | 2013 |
| Fire Prevention Plus Ltd | Extraterritorial | 2017 |
| Fire Safety Estimating & Design Services Limited | Public administration | 2020 |
| Firetag Ltd | Information & communication | 2024 |
| Flavor Marketing Group Limited | Professional & scientific | 2026 |
| Fleet Sense Limited | Wholesale & retail | 2008 |
| Flex Cleans Limited | Administrative & support | 2024 |
| Fleximed Training Limited | Health & social care | 2016 |
| FLICK6 Limited | Information & communication | 2025 |
| Flidor Limited | Water & waste | 1990 |
| Florance Care Limited | Health & social care | 2023 |
| Floranova Limited | Wholesale & retail | 1978 |
| Floranova Vegetable Seed Limited | Wholesale & retail | 2008 |
| Floria Leah Botanicals Ltd | Wholesale & retail | 2024 |
| Flow Pro Window Cleaning Ltd | Administrative & support | 2024 |
| Flow Stitch Studio Limited | Manufacturing | 2024 |
| Fluxscale Investment Limited | Professional & scientific | 2023 |
| Fluxscale Limited | Professional & scientific | 2022 |
| Flying Money Transfer Ltd | Financial services | 2026 |
| Focused Mortgage and Protection Solutions LLP | | 2018 |
| Focussed Finance Limited | Professional & scientific | 2018 |
| Folk in a Field Festival Limited | Arts & recreation | 2021 |
| Foundry Wealth Ltd | Financial services | 2019 |
| FOX & Co (Anglia) Limited | Professional & scientific | 2006 |
| FOX Thorn Smith Limited | Extraterritorial | 2014 |
| Foyer Property Ltd | Real estate | 2019 |
| Frame Surgery Developments Ltd | Information & communication | 2025 |
| Frame Surgery Limited | Information & communication | 2012 |
| Franco Properties Limited | Financial services | 2020 |
| Frappell & Knight Limited | Construction | 2004 |
| Freddie Allum Racing Ltd | Arts & recreation | 2022 |
| Freedom IS Happening Ltd | Wholesale & retail | 2020 |
| Freedom Sports Technology Limited | Information & communication | 2016 |
| Fresh Pizza and Pasta Limited | Hospitality | 2026 |
| Friends of Dereham Memorial Hall | Arts & recreation | 2013 |
| Friends of RN Limited | Professional & scientific | 2018 |
| Frith Associates Limited | Professional & scientific | 2008 |
| From Pork to Fork Ltd | Hospitality | 2024 |
| Fruit FLY Research and Development Limited | Professional & scientific | 2015 |
| Fuchsia and Nest Ltd | Real estate | 2025 |
| Full COL Industries Limited | Manufacturing | 2025 |