| Chong Electrical Limited | Construction | 2012 |
| Christ Community Church, Attleborough | Other services | 2012 |
| Christian Gifts Ltd | Wholesale & retail | 2010 |
| Church Cottage Furnishings Limited | Manufacturing | 2013 |
| Cindy Nails (Attleborough) Ltd | Other services | 2021 |
| Clarke Build Co Norfolk Ltd | Construction | 2025 |
| Claystone Property Limited | Households | 2026 |
| Clear Brew Norwich Ltd | Administrative & support | 2019 |
| Clearscape Ltd | Administrative & support | 2023 |
| Clipper Read Ltd | Real estate | 2018 |
| Clocker Digital Ltd | Wholesale & retail | 2024 |
| Cloud X Ltd | Professional & scientific | 2021 |
| Cloverleaf Homes Limited | Real estate | 2022 |
| CLW Property Ltd | Real estate | 2022 |
| CO2O Consulting Ltd | Construction | 2023 |
| Coastal Earth Ltd | Manufacturing | 2014 |
| Coffeesmiths Attleborough Limited | Hospitality | 2024 |
| Collett Automotive Limited | Wholesale & retail | 2023 |
| Competition Fabrications Ltd. | Manufacturing | 2017 |
| Completely Payroll Limited | Professional & scientific | 2024 |
| Consult Design Create Limited | Manufacturing | 2008 |
| Content Harbour Ltd | Information & communication | 2025 |
| Cooke's Hospitality Ltd | Hospitality | 2018 |
| Coral PUB Company (Bear & Ragged Staff) Limited | Hospitality | 2026 |
| Coral PUB Company (Black Horse) Limited | Hospitality | 2026 |
| Coral PUB Company (Brookmans) Limited | Hospitality | 2026 |
| Coral PUB Company (Chequers) Limited | Hospitality | 2026 |
| Coral PUB Company (Drummond) Limited | Hospitality | 2026 |
| Coral PUB Company (Fishes) Limited | Hospitality | 2026 |
| Coral PUB Company (Fleece) Limited | Hospitality | 2026 |
| Coral PUB Company (Star & Garter) Limited | Hospitality | 2026 |
| Coral PUB Company (White Lion) Limited | Hospitality | 2026 |
| Coral PUB Company Acquisition Limited | Financial services | 2026 |
| Coral PUB Company Holdings Limited | Financial services | 2026 |
| Cornwall and Morgan Ltd | Professional & scientific | 2026 |
| Corum Technology Limited | Professional & scientific | 2014 |
| Cossey Leisure Limited | Hospitality | 2012 |
| Countrywide Property Services (Norfolk) Ltd | Construction | 2021 |
| Cove Communities Venture 2 Gwel an MOR Propco Limited | Hospitality | 2008 |
| Cove Communities Venture 2 Medmerry Opco Limited | Real estate | 2021 |
| Cove Communities Venture 2 Medmerry Propco Limited | Real estate | 2021 |
| Cove Communities Venture 2 Solway Propco Limited | Real estate | 2022 |
| Cove Communities Venture 2 Springwood Propco Limited | Real estate | 2022 |
| Crane Fruehauf Agri-Roll Ltd | Manufacturing | 2019 |
| Crane Fruehauf Ltd | Manufacturing | 2019 |
| Cressgreen Limited | Real estate | 2014 |
| Crowshall Veterinary Services LLP | | 2014 |
| Crsure Limited | Wholesale & retail | 2021 |
| CSL Surveying Limited | Professional & scientific | 2021 |
| CSS Financial Services Ltd | Financial services | 2017 |
| Cupola Opco Limited | Hospitality | 2023 |
| Curve Monkey Limited | Manufacturing | 2011 |
| D a Lathan Engineering Limited | Professional & scientific | 2018 |
| D J and J K Waller Limited | Agriculture & fishing | 2017 |
| D M Drewry Ltd | Transport & logistics | 2026 |
| D P & J Leeder Enterprise Limited | Hospitality | 2018 |
| D&S Skip Services Ltd | Manufacturing | 2025 |
| D.B. & S.M. Hunt Limited | Construction | 2001 |
| D.J.E. Construction Limited | Construction | 1994 |
| D.J.E. Holdings Limited | Professional & scientific | 2008 |
| D.N.A. Reynolds Services Limited | Water & waste | 2013 |
| D.S Cromack Plumbing & Heating Limited | Construction | 2017 |
| Daily Grind Coffee Ltd | Wholesale & retail | 2024 |
| DAL Cladding Services Limited | Construction | 2006 |
| Dales View Opco Limited | Hospitality | 2023 |
| Daniel Food Ltd | Wholesale & retail | 2025 |
| Darcie Richards Ltd | Construction | 2023 |
| Datum Point Consultancy Ltd | Professional & scientific | 2024 |
| Dave Snelling Garage Equipment Ltd | Extraterritorial | 2009 |
| David Alston (Suffolk) Limited | Extraterritorial | 2011 |
| David Batch Holdings Limited | Financial services | 2024 |
| David Mcharg Agri Ltd | Wholesale & retail | 2024 |
| Daviesarcher Investments Limited | Financial services | 2025 |
| DBN Consultancy Ltd | Professional & scientific | 2023 |
| DC Groundworks Norfolk Limited | Construction | 2022 |
| DE Performance Training Ltd | Arts & recreation | 2025 |
| Dearclient Ltd | Information & communication | 2022 |
| Deer Path Farm Limited | Hospitality | 2021 |
| Deer's Leap Opco Limited | Hospitality | 2023 |
| Devantech Limited | Manufacturing | 1992 |
| Digital Design Works Limited | Information & communication | 2009 |
| Diligent Care Ltd | Administrative & support | 2026 |
| Ding Dong Group Ltd | Information & communication | 2025 |
| Dingle Brothers Limited | Extraterritorial | 1998 |
| Dingles Motor Group Limited | Extraterritorial | 1996 |
| Djdr Textiles Ltd | Water & waste | 2023 |
| DJK SIM Limited | Professional & scientific | 2013 |
| DJT Rocklands Ltd | Hospitality | 2017 |
| DLR Industrial Services Limited | Manufacturing | 2023 |
| Dolphin Diversity Ltd | Professional & scientific | 2021 |
| Dolphin River Opco Limited | Hospitality | 2023 |
| DPM Fire & Security Limited | Administrative & support | 2016 |
| Dragon Import Services Limited | Wholesale & retail | 2014 |
| DRD Insights Limited | Information & communication | 2024 |
| Drone Defence Limited | Administrative & support | 2016 |
| Drummer Ltd | Arts & recreation | 2022 |
| DSF Municipal Ltd | Wholesale & retail | 2020 |
| Dspic Ltd | Other services | 2019 |
| DTK Mortgage and Protection Limited | Financial services | 2018 |
| Duke of Wellington (Norwich) Limited | Hospitality | 2003 |