| Dereham Motor Company Ltd | Wholesale & retail | 2021 |
| Dereham Nails Ltd | Other services | 2021 |
| Dereham Pizza Limited | Hospitality | 2023 |
| Dereham Podiatry Practice Limited | Health & social care | 2012 |
| Dereham PUB Co Ltd | Hospitality | 2023 |
| Dereham Resprays & Auto Services Limited | Wholesale & retail | 2015 |
| Dereham Road Development Ltd | Construction | 2019 |
| Dereham Service Centre Ltd | Wholesale & retail | 2022 |
| Dereham Taxis Limited | Transport & logistics | 2010 |
| Dereham Travel Limited | Extraterritorial | 2015 |
| Dereham Working Together CIC | Real estate | 2025 |
| Detail Doctor. Ltd | Transport & logistics | 2025 |
| Detailed Systems Limited | Information & communication | 1997 |
| DH Estimating & Consultancy Ltd | Professional & scientific | 2024 |
| Didlington Nurseries Limited | Agriculture & fishing | 2010 |
| Digital Care Partnership Limited | Other services | 2015 |
| Digitising Reality Ltd | Professional & scientific | 2020 |
| Diocese of Norwich Education Services Company Ltd | Education | 2019 |
| Direct Taxis (Norfolk) Limited | Transport & logistics | 2022 |
| Dirty Dogs 2026 Ltd | Agriculture & fishing | 2026 |
| Dits Catering Ltd | Hospitality | 2019 |
| DIY Slime Party Limited | Wholesale & retail | 2018 |
| DJA Logistics Ltd | Transport & logistics | 2024 |
| DKB Investments Ltd | Real estate | 2024 |
| DL Racing Ltd | Wholesale & retail | 2021 |
| DM Strat Group Limited | Real estate | 2025 |
| DMR Structural Ltd. | Professional & scientific | 2001 |
| Document Safe Limited | Other services | 2003 |
| Doggy Washy Woos Limited | Agriculture & fishing | 2026 |
| Donald's Tours Limited | Transport & logistics | 2020 |
| Donnellan & Bouchier Ltd. | Wholesale & retail | 2017 |
| Dons Care Limited | Health & social care | 2017 |
| Doors Plus Group Ltd | Construction | 2022 |
| Doors Plus Holdings Ltd | Financial services | 2022 |
| Doors Plus Ltd | Construction | 2012 |
| Doti Limited | Wholesale & retail | 2025 |
| Dove Company Design Limited | Manufacturing | 1984 |
| DP Building & Decorating Ltd | Construction | 2022 |
| DP Decorating Limited | Construction | 2017 |
| DPG Home Improvements Ltd | Wholesale & retail | 2025 |
| DR a James Ltd | Health & social care | 2012 |
| DR Heating Services Limited | Construction | 2017 |
| DR Maria Madge Limited | Health & social care | 2020 |
| DR Transport Services Ltd | Transport & logistics | 2023 |
| Dragos-Catalin Musat Limited | Administrative & support | 2019 |
| Drillit Logs Limited | Information & communication | 2017 |
| DRP Horticultural Services Limited | Wholesale & retail | 2020 |
| DSS Groundworks & Civils Ltd | Construction | 2026 |
| DTC Distribution Limited | Wholesale & retail | 2008 |
| DTC Interiors Limited | Wholesale & retail | 2005 |
| Dumpling Green Developments Ltd | Construction | 2022 |
| Dykes Associates Architects Limited | Professional & scientific | 2008 |
| Dynasty Prime Protection Ltd | Wholesale & retail | 2019 |
| E & J Eatery Limited | Hospitality | 2017 |
| E York Limited | Professional & scientific | 2013 |
| E. & S.J. Walpole (Haulage) Limited | Transport & logistics | 2019 |
| E.W Aviation Ltd | Manufacturing | 2024 |
| EA Plastering & Building Ltd | Construction | 2025 |
| EAB Builders Limited | Construction | 2017 |
| Eadr Ltd | Professional & scientific | 2019 |
| Eafc Ltd | Construction | 2019 |
| Eagle Home Renovations Ltd | Real estate | 2024 |
| Eagle Mini Mart Ltd | Wholesale & retail | 2020 |
| East Anglia Commercials Ltd | Wholesale & retail | 2019 |
| East Anglian Builders & Developers Ltd | Construction | 2025 |
| East Anglian Cottages Ltd | Hospitality | 2022 |
| East Anglian Data Recovery Services Limited | Information & communication | 2012 |
| East Anglian Stabling Limited | Construction | 2015 |
| East Bilney Coachworks Limited | Wholesale & retail | 2008 |
| East Bilney Garage Limited | Wholesale & retail | 1975 |
| East Bilney Lakes Ltd | Agriculture & fishing | 2020 |
| East Coast Cinema Limited | Information & communication | 2008 |
| East Coast Dwellings Ltd | Real estate | 2017 |
| East Dereham Day Nursery Limited | Administrative & support | 2009 |
| East Fleet Recovery Services Ltd | Transport & logistics | 2018 |
| Easter Assets Ltd | Administrative & support | 2022 |
| Easter Commercial Limited | Administrative & support | 2002 |
| Eastern Civils & Construction Ltd | Construction | 2021 |
| Eastern Counties Securities Ltd | Wholesale & retail | 1999 |
| Eastern Plant Machinery Ltd | Construction | 2019 |
| Eating Disorders Support Limited | Health & social care | 2019 |
| EBB and Ease Ltd | Wholesale & retail | 2025 |
| Echo HUT Homes Ltd | Real estate | 2025 |
| Eckling Grange Limited | Health & social care | 1965 |
| ECM Ltd | Real estate | 2017 |
| Eco Window and Door Company Limited | Construction | 2014 |
| Ecomfa Ltd | Wholesale & retail | 2026 |
| Ecomva Ltd | Wholesale & retail | 2026 |
| Economy Car Hire Limited | Administrative & support | 2002 |
| EDC Associates Limited | Hospitality | 2009 |
| Eddie's Home Improvements Ltd | Construction | 2021 |
| EDM Communications Limited | Information & communication | 2022 |
| EDN Kitchens & Carpentry Services Ltd | Construction | 2018 |
| Education Development Solutions International Limited | Education | 2017 |
| Education Research Services Limited | Professional & scientific | 2014 |
| Ehrhart Services Limited | Administrative & support | 2026 |
| Eisi Limited | Manufacturing | 2014 |
| EKS Secretarial Services Limited | Administrative & support | 2008 |
| Electrasolve Ltd | Construction | 2022 |
| Elevara Ltd | Construction | 2024 |