| DEVRIM80 Ltd | Hospitality | 2024 |
| Dexion Storage Centre Anglia Limited | Wholesale & retail | 1998 |
| DFX Ltd | Manufacturing | 2020 |
| DG Property Services Ltd | Construction | 2018 |
| DGM Development (Cambridge) Ltd | Construction | 2024 |
| DGM Joinery Ltd | Construction | 2012 |
| DH Groundworks & Landscaping Ltd | Construction | 2026 |
| DHB Builders Ltd | Construction | 2015 |
| Diamond Asia Massage & Spa Ltd | Other services | 2025 |
| Diamond Oak Investments Ltd | Wholesale & retail | 2016 |
| Dickies Pet Centre (Wisbech) Limited | Wholesale & retail | 2005 |
| Dickies Pet Centre Ltd | Wholesale & retail | 2003 |
| Digital Bridge Skills Limited | Information & communication | 2012 |
| Digitalane Ltd | Professional & scientific | 2026 |
| Dinex UK & Co Ltd | Hospitality | 2013 |
| Direct Plants Limited | Agriculture & fishing | 2016 |
| Disco Drives (King's Lynn) Limited | Manufacturing | 1994 |
| Dispex Limited | Administrative & support | 2001 |
| Distinct Designs UK Limited | Professional & scientific | 2006 |
| DISTINGUISHED237 Ltd | Health & social care | 2023 |
| Ditor Limited | Administrative & support | 2020 |
| Divine Gallery Ltd | Wholesale & retail | 2025 |
| DJF Painting & Decorating Limited | Construction | 2019 |
| DJF1986 Electrical Ltd | Construction | 2024 |
| DJL Electrical & Air Conditioning Ltd | Construction | 2023 |
| DJL Product Sales Ltd | Wholesale & retail | 2025 |
| Djrb Ltd | Manufacturing | 2021 |
| DJS Homes Ltd | Real estate | 2019 |
| DK Electronic Exchange Limited | Wholesale & retail | 2025 |
| DLH Leisure Limited | Hospitality | 2018 |
| DMB Carpets & Flooring Ltd | Wholesale & retail | 2026 |
| DNA IT Services Limited | Information & communication | 2021 |
| DNA Plastering Ltd | Construction | 2023 |
| Document Support Specialist Ltd | Professional & scientific | 2023 |
| Dog First AID Services Limited | Professional & scientific | 2018 |
| Dog Walking Services Norfolk Ltd | Other services | 2025 |
| Dog Zone Ltd | Other services | 2017 |
| Dollen Rentals Limited | Other services | 2020 |
| Dom.H Ltd | Administrative & support | 2016 |
| Dominic Younge Mortgages Limited | Administrative & support | 2025 |
| Domlily Limited | Wholesale & retail | 2024 |
| Don&Family Ltd | Transport & logistics | 2021 |
| Don'T Dwell on IT Ltd | Real estate | 2026 |
| Donpir Limited | Real estate | 2024 |
| Dorarubber Ltd | Manufacturing | 2020 |
| Dormy House (Brancaster) Limited | Households | 1995 |
| Dottie & Oscar Limited | Wholesale & retail | 2025 |
| Doubtfires Waffles Ltd | Hospitality | 2019 |
| Douglas-Scott Developments Ltd | Construction | 2020 |
| Dowley & Co. Ltd | Professional & scientific | 2021 |
| Down Mill Drive Residents Company Limited | Households | 2017 |
| Downham Door Services Limited | Extraterritorial | 1981 |
| Downham Market Complementary Health Clinic Limited | Health & social care | 2019 |
| DOY Holdings Ltd | Financial services | 2025 |
| DPE Groundworks and Construction Ltd | Construction | 2019 |
| DPE Groundworks Ltd | Extraterritorial | 2018 |
| Dplb Management Services Limited | Professional & scientific | 2019 |
| Dpps Training and Consultancy Ltd | Health & social care | 2010 |
| DR G K Radja Limited | Health & social care | 2015 |
| DR Nathan Holt Ltd | Health & social care | 2019 |
| DR Tourky Mrcs-B Course Ltd | Education | 2024 |
| Draglime Limited | Construction | 2022 |
| Dragon Capital Takeaway Limited | Hospitality | 2007 |
| Dragon Fire Restaurant Limited | Hospitality | 2025 |
| Dragon Security Systems Limited | Professional & scientific | 2005 |
| Dragons Brew Ltd | Hospitality | 2006 |
| Draper Media Limited | Information & communication | 2015 |
| DRC Lifting Services Ltd | Construction | 2010 |
| Dream Retreats Limited | Hospitality | 2009 |
| Dream Team Productions Ltd. | Information & communication | 2021 |
| Dreamy Hollow Leisure Limited | Arts & recreation | 2012 |
| Drew Media Ltd | Information & communication | 2017 |
| Drewery & Co Limited | Administrative & support | 2007 |
| Dri-House Ltd | Construction | 2024 |
| Driftwood Glass Studio Limited | Wholesale & retail | 2015 |
| Drippedcollectives Ltd | Other services | 2023 |
| Driver Supply East Anglia Ltd | Transport & logistics | 2025 |
| Driversequipment.Com (Holdings) Ltd | Wholesale & retail | 2016 |
| Driversequipment.Com Ltd | Wholesale & retail | 2016 |
| Drop PIT Imports UK Limited | Administrative & support | 2026 |
| DS Medals and Trophies Limited | Wholesale & retail | 2017 |
| DSH Capital Ltd | Real estate | 2022 |
| DSL Logistics Limited | Transport & logistics | 2010 |
| DTC Contracts Limited | Administrative & support | 2007 |
| DTF Security Limited | Administrative & support | 2018 |
| Dukes Head Tham's Restaurant and Bar Limited | Real estate | 2007 |
| Dundee Court Dental Centre Limited | Health & social care | 2016 |
| Dunnington Sporting Club Ltd | Arts & recreation | 2023 |
| Dutch Engineering Services Limited | Wholesale & retail | 1995 |
| DVL Electrical Limited | Construction | 2025 |
| Dwkc Group Holdings Limited | Financial services | 2026 |
| DXB Hills Ltd | Professional & scientific | 2025 |
| Dynamic Digital Ltd | Information & communication | 2013 |
| E & a 13 Ltd | Other services | 2025 |
| E & P Thompson Limited | Agriculture & fishing | 2003 |
| E D W Hygiene Services Limited | Health & social care | 2016 |
| E F Veal Farming Ltd | Agriculture & fishing | 2017 |
| E Hoque SRV Ltd | Construction | 2025 |
| E Owen Construction Ltd | Construction | 2025 |
| E S Blundy Limited | Financial services | 2015 |