| Ecoprompt Limited | Hospitality | 2005 |
| ECS Business Development Services Ltd | Professional & scientific | 2000 |
| Edenprime Systems Limited | Information & communication | 2002 |
| Edward Halford Limited | Construction | 2006 |
| Edward Thackray Limited | Real estate | 1972 |
| Elderglen Developments Ltd | Professional & scientific | 1987 |
| Elouise Lingerie Limited | Extraterritorial | 2007 |
| Elvis's Hot Rocks Limited | Hospitality | 2007 |
| ELY Kebab House Ltd | Hospitality | 2025 |
| ELY Kebab Ltd | Hospitality | 2023 |
| Emhof Ventures (UK) Ltd | Information & communication | 2023 |
| Emmaus Cambridge | Wholesale & retail | 1997 |
| Endeavour Properties (UK) Limited | Real estate | 2006 |
| Endoline Ltd | Manufacturing | 2004 |
| Enephads | | 1997 |
| Energyplus Solutions Limited | Other services | 1999 |
| Engineering & Factory Supplies Limited | Wholesale & retail | 1985 |
| Environmental Science Group Limited | Manufacturing | 1994 |
| EOD Limited | Hospitality | 2006 |
| EPM Environmental Project Management Limited | Manufacturing | 2016 |
| Erbier Limited | Professional & scientific | 2007 |
| Esprit Logistics Limited | Transport & logistics | 2002 |
| ETY Limited | Professional & scientific | 2004 |
| Euro Roofing and Building Maintenance Limited | Construction | 2002 |
| EVE Waldron Design Limited | Wholesale & retail | 2004 |
| Even Forestry Limited | Agriculture & fishing | 2005 |
| Exportforth Limited | Real estate | 2001 |
| Extruder Shop Limited | Wholesale & retail | 2005 |
| Fanjen Limited | Real estate | 2004 |
| Feltwell Growers Limited | Agriculture & fishing | 2002 |
| Fenberry Farm Limited | Agriculture & fishing | 2002 |
| Fenland Farmers Limited | Agriculture & fishing | 2008 |
| Fenland Organics Limited | Agriculture & fishing | 2006 |
| Fenmac Limited | Construction | 1999 |
| Ferrie Electrical Services Limited | Professional & scientific | 2006 |
| Fine Design Limited | Professional & scientific | 2000 |
| First Light Lamps Limited | Manufacturing | 2003 |
| Firstchoice PHV & Tours Ltd | Transport & logistics | 2026 |
| Flags Holdings Limited | Professional & scientific | 1997 |
| Floreon Limited | Real estate | 2002 |
| Fonestop Limited | Wholesale & retail | 2024 |
| Fortune Inn March Ltd | Hospitality | 2023 |
| Foskers (Brands Hatch) Limited | Administrative & support | 1996 |
| Foskers (Sales) Limited | Professional & scientific | 1996 |
| FOX Narrowboats Limited | Manufacturing | 2004 |
| Freeland Rees Roberts Limited | Professional & scientific | 2005 |
| Frostnet Limited | Information & communication | 2003 |
| G J Electrics Limited | Construction | 2004 |
| G'S Fenland Organics Limited | Agriculture & fishing | 2006 |
| G'S Fresh Limited | Wholesale & retail | 2005 |
| G'S Fresh Salads Limited | Agriculture & fishing | 1958 |
| G'S Growers Limited | Agriculture & fishing | 1984 |
| Gaskin Brothers Limited | Construction | 2008 |
| GEA Consultants Limited | Professional & scientific | 1995 |
| Geddes Architects Limited | Professional & scientific | 2002 |
| Geoff Hobbs Haulage Limited | Transport & logistics | 2002 |
| George Thurlow and Sons (Holdings) Limited | Financial services | 1903 |
| Georgia House Ltd | Wholesale & retail | 2020 |
| GH Trustees Limited | Professional & scientific | 2002 |
| Gibbs Brothers Ltd | Professional & scientific | 2015 |
| Gig-A-Bull Limited | Arts & recreation | 2007 |
| Glenbrook Developments Limited | Other services | 2003 |
| Glenford Agencies Ltd | Wholesale & retail | 2003 |
| Global Phasing Limited | Information & communication | 1996 |
| Graham Young Chemist Limited | Wholesale & retail | 1983 |
| Graphcam (UK) Limited | Information & communication | 2004 |
| GRB Maintenance & Cleaning Limited | Transport & logistics | 2005 |
| Green Graphics Ltd | Manufacturing | 2007 |
| Greetings Limited | Wholesale & retail | 2005 |
| Greys of ELY Ltd | Transport & logistics | 2006 |
| GRS02 Ltd | Transport & logistics | 2018 |
| H.& J.Cutlack Limited | Wholesale & retail | 1922 |
| Hamerton Zoological Park Limited | Arts & recreation | 2004 |
| Harvey Road Day Nursery Limited | Education | 2007 |
| Harvey Robinson Limited | Real estate | 2004 |
| Hash Clothing Limited | Wholesale & retail | 2004 |
| Haycube Ltd | Manufacturing | 2015 |
| Heacham Holidays Holdings Limited | Financial services | 2023 |
| Head Plastering Services Limited | Construction | 1981 |
| Heading Power Limited | Wholesale & retail | 2013 |
| Heavenly Pets Direct Limited | Extraterritorial | 1999 |
| Hegarty LLP | | 2005 |
| Helsian Properties Limited | Real estate | 1995 |
| Hertford Resources Ltd | Hospitality | 2004 |
| HHH Transport Ltd | Transport & logistics | 2025 |
| Hilary Seaward Limited | Professional & scientific | 2003 |
| Hilton Food Group PLC | Professional & scientific | 2007 |
| HMW Property Limited | Real estate | 2021 |
| HNH Builders Limited | Construction | 2003 |
| Homehunters Developments Limited | Real estate | 1999 |
| Homesteads (Comberton) Limited | Administrative & support | 2003 |
| Hooker Holdings Limited | Professional & scientific | 2007 |
| House of Flags Limited | Manufacturing | 1988 |
| Howard Crescent Limited | Financial services | 2005 |
| Howard Grove Limited | Real estate | 2001 |
| Hybrid Laser Tech Limited | Manufacturing | 1987 |
| Hyperwebspace Ltd | Other services | 2021 |
| I. Haddow Limited | Transport & logistics | 2003 |
| Icon Engineering (Wisbech) Ltd | Manufacturing | 1997 |
| IMB Contracts Ltd | Construction | 2006 |