| Eastern Air Conditioning Limited | Professional & scientific | 2000 |
| Eastern Auto Spares (Ipswich Holdings) Limited | Professional & scientific | 1986 |
| Eastern Auto Spares (Ipswich) Limited | Wholesale & retail | 1975 |
| Eastern Business Finance Limited | Financial services | 2008 |
| Eastern Catering Solutions Limited | Hospitality | 2022 |
| Eastern Chauffeur Limited | Transport & logistics | 2007 |
| Eastern Dermatology Ltd | Health & social care | 2017 |
| Eastern ECI Services Ltd | Construction | 2026 |
| Eastern Ecology Limited | Professional & scientific | 2025 |
| Eastern Electrical (Norwich) Ltd | Construction | 2014 |
| Eastern Electrical Ltd | Construction | 2015 |
| Eastern Energy Group Ltd | Administrative & support | 2017 |
| Eastern Energy Limited | Real estate | 2020 |
| Eastern European Translations Ltd | Professional & scientific | 2025 |
| Eastern Financial Consultants Ltd | Financial services | 2012 |
| Eastern Folkloric | Arts & recreation | 2023 |
| Eastern Gastroenterology Group Limited | Health & social care | 2019 |
| Eastern GUN Company Limited | Wholesale & retail | 2014 |
| Eastern Heat Ltd | Construction | 2018 |
| Eastern Horizon Care Limited | Extraterritorial | 2024 |
| Eastern Industrial Detailing Limited | Construction | 2008 |
| Eastern Landlords Association | Other services | 1997 |
| Eastern Laser Vision Ltd | Health & social care | 2009 |
| Eastern Plant Limited | Transport & logistics | 2026 |
| Eastern Plant Sales Limited | Transport & logistics | 2023 |
| Eastern Procurement Limited | Other services | 2013 |
| Eastern Prospective Holdings Limited | Financial services | 2011 |
| Eastern Region Calls & Print Ltd | Manufacturing | 2007 |
| Eastern Renovations Ltd | Construction | 2023 |
| Eastern Retail Services (Household) Limited | Real estate | 1967 |
| Eastern Retailing Limited | Wholesale & retail | 1986 |
| Eastern Roofing and Solar Installation Limited | Construction | 2011 |
| Eastern Security Systems Ltd | Construction | 2019 |
| Eastern Shop Equipment Limited | Manufacturing | 1974 |
| Eastern Water Treatment Limited | Wholesale & retail | 1999 |
| Eastern Wealth Management Limited | Financial services | 2016 |
| Eastern Windows and Doors Limited | Administrative & support | 1985 |
| Eastern Wing Consulting Limited | Information & communication | 2025 |
| Easternsun Limited | Financial services | 2014 |
| Easters (Norwich) Limited | Wholesale & retail | 2010 |
| Easters Bakery Ltd | Wholesale & retail | 2002 |
| Easters Bakery Norwich Ltd | Hospitality | 2023 |
| Eastfield Accountants Limited | Professional & scientific | 2020 |
| Eastgate Farms Limited | Financial services | 2011 |
| Eastgate Mews Ltd | Construction | 2025 |
| Easthaugh Farms Limited | Real estate | 1965 |
| Eastheat Limited | Construction | 2022 |
| Eastings Limited | Professional & scientific | 2009 |
| Eastlea Limited | Construction | 1986 |
| Eastleigh Properties Limited | Real estate | 2006 |
| Easton Apartments Ltd | Hospitality | 2018 |
| Easton Surveyors Limited | Professional & scientific | 1999 |
| Eastpoint Group Ltd | Professional & scientific | 2026 |
| Eastpoint Technology Ltd | Professional & scientific | 2025 |
| Eastside Assets Limited | Real estate | 2011 |
| Eastville Homes Limited | Construction | 2022 |
| Eastwind Cluster Limited | Professional & scientific | 2024 |
| Eastwood Whelpton Limited | Manufacturing | 1958 |
| Easy Compute Ltd | Manufacturing | 2023 |
| Easy Crypto Hunter Ltd | Extraterritorial | 2018 |
| Easy Law Services Ltd | Education | 2025 |
| EASY4STAY Rentals Ltd | Real estate | 2025 |
| Easypc Limited | Information & communication | 2008 |
| Easystore 247 Limited | Transport & logistics | 2003 |
| EAT and Breathe (East Anglia) Ltd | Information & communication | 2019 |
| EAT Real 25 Ltd | Hospitality | 2025 |
| EAT Well NOW Limited | Hospitality | 2018 |
| Eaton Cottage Limited | Hospitality | 2016 |
| Eaton Gates (Keswick) Management Company Limited | Households | 2000 |
| Eaton Gold Limited | Wholesale & retail | 2015 |
| Eaton Golf Club (Norwich) Limited | Arts & recreation | 1997 |
| Eaton House Residents' Association Limited | Households | 1979 |
| Eaton Park Crazy Golf Limited | Arts & recreation | 2025 |
| Eaton Supermarket Ltd | Wholesale & retail | 2026 |
| Eaton Vale Scout & Guide Activity Centre Limited | Hospitality | 1998 |
| Eatsocial Norfolk C.I.C. | Health & social care | 2025 |
| Eatwell Catering Contractors (Norwich) Limited | Wholesale & retail | 1972 |
| EB Fenn Ltd | Hospitality | 2022 |
| Eb-Corp Limited | Health & social care | 2016 |
| EBB Assist Ltd | Administrative & support | 2025 |
| Ebenezer Olulade Limited | Health & social care | 2024 |
| Ebersiouda Consultants Ltd | Professional & scientific | 2021 |
| EBG Norwich Ltd | Administrative & support | 2026 |
| EBG Waveney Valley Ltd | Administrative & support | 2026 |
| EBI Coaching Limited | Professional & scientific | 2025 |
| EBI Properties Limited | Real estate | 2019 |
| Ebila UK Ltd | Construction | 2024 |
| Ebony Holdings Limited | Agriculture & fishing | 2001 |
| Ebony MAY Aesthetics Ltd | Other services | 2023 |
| EC Accounting Ltd | Extraterritorial | 2018 |
| EC Advisors Ltd | Extraterritorial | 2018 |
| EC Fill IT Stake Limited | Financial services | 2022 |
| EC Murrell Ltd | Agriculture & fishing | 2023 |
| EC Training Ltd | Extraterritorial | 2018 |
| Ec&D Strategy Consultants Ltd | Professional & scientific | 2023 |
| EC10 Limited | Wholesale & retail | 2026 |
| ECA Tax Associates Ltd | Professional & scientific | 2023 |
| Ecaf Ltd | Financial services | 2024 |
| ECC Truck Sales Limited | Extraterritorial | 1998 |
| Eccelearning Limited | Education | 2015 |