| Crabbetts Marsh Roadway Ltd | Real estate | 2023 |
| Crabtree Living Ltd | Construction | 2017 |
| Cradle Halls Farms Limited | Agriculture & fishing | 2022 |
| Craft Connoisseur Group Ltd | Transport & logistics | 2016 |
| Crafted Films Ltd | Information & communication | 2022 |
| Craftily Bars & Events Ltd | Hospitality | 2019 |
| Crafts and Play Ltd | Other services | 2022 |
| Crafty Llama Ltd | Wholesale & retail | 2020 |
| Craig Daniels Automotive Limited | Wholesale & retail | 2019 |
| Craig Milton Holdings Ltd | Financial services | 2025 |
| Crampsie and SON Limited | Hospitality | 2004 |
| Cranbray Limited | Real estate | 1981 |
| Cranbrook Heating Limited | Construction | 2013 |
| Cranch Limited | Construction | 2025 |
| Crane & Sons Farms Limited | Agriculture & fishing | 1957 |
| Crane and Kent Limited | Real estate | 1966 |
| Crane Developments Limited | Construction | 2000 |
| Cranley Sports & Classics Ltd | Wholesale & retail | 2014 |
| Cranmer Education Limited | Education | 2024 |
| Cranswick & Wilkin Ltd | Manufacturing | 2003 |
| Crash Happy Productions Limited | Information & communication | 2025 |
| Crash Holdings Ltd | Extraterritorial | 2023 |
| CRATES4YOU Limited | Manufacturing | 2013 |
| Crave Lounge Ltd | Hospitality | 2025 |
| Cravo Ltd | Information & communication | 2026 |
| Craymere Consulting Limited | Professional & scientific | 2018 |
| Crazy Cat Comps Ltd | Arts & recreation | 2024 |
| CRB Cafe Ltd | Hospitality | 2025 |
| CRE Strategy Modelling Limited | Professional & scientific | 2016 |
| Creadis UK Ltd | Professional & scientific | 2017 |
| Create Consulting Engineers Limited | Professional & scientific | 2009 |
| Create Design Ltd | Professional & scientific | 2012 |
| Create Property 2 Ltd | Extraterritorial | 2024 |
| Create Space Properties Ltd | Health & social care | 2020 |
| Created by Claire Ltd | Manufacturing | 2019 |
| Creation (Norwich) Ltd | Other services | 2020 |
| Creative Arts East | Arts & recreation | 1994 |
| Creative Audio Defined Ltd | Information & communication | 2011 |
| Creative by Jake Ltd | Arts & recreation | 2018 |
| Creative Care (Norfolk) Ltd | Health & social care | 2019 |
| Creative Carousel Publishing Ltd | Information & communication | 2024 |
| Creative Credit Services Ltd | Administrative & support | 2018 |
| Creative Croissants Ltd | Information & communication | 2023 |
| Creative Design and Print Solutions Ltd | Information & communication | 2016 |
| Creative Image Management Limited | Professional & scientific | 1999 |
| Creative Learning (Norwich) Limited | Manufacturing | 2017 |
| Creative Lincs Ltd | Manufacturing | 2018 |
| Creative Odyssey CIC | Education | 2021 |
| Creative Plastering Limited | Construction | 2025 |
| Creative Socials by Hannah Limited | Extraterritorial | 2025 |
| Creative Solar Solutions Limited | Energy | 2011 |
| Creative Spirit Business Services Ltd | Professional & scientific | 2022 |
| Creative Sponge Limited | Professional & scientific | 2004 |
| Creative With Line Ltd | Wholesale & retail | 2022 |
| Creativity Unbound Limited | Professional & scientific | 2021 |
| Credence Associates Limited | Professional & scientific | 2013 |
| Credence House Limited | Wholesale & retail | 2020 |
| Credit Information Governance Body Limited | Financial services | 2025 |
| Cree Capital Ltd | Professional & scientific | 2019 |
| Creeate Limited | Construction | 2019 |
| Crepe Debonair Ltd | Hospitality | 2023 |
| Crescent (Norwich) Limited (the) | Households | 1972 |
| Crescent House Limited | Construction | 1958 |
| Cresdee Communications Limited | Administrative & support | 2015 |
| Cresswell Street Estate Company Limited | Real estate | 2018 |
| Crest IT Consultancy Services Limited | Information & communication | 2007 |
| Cresta Construction Holdings Limited | Households | 2025 |
| Cresta Construction Limited | Construction | 2018 |
| Cresta Property Ltd | Real estate | 2020 |
| Crestline Ventures Ltd | Information & communication | 2025 |
| Cretu Limited | Transport & logistics | 2019 |
| Cribb Cyber Security Ltd | Information & communication | 2016 |
| Crimson Development Homes Limited | Construction | 2020 |
| Cringleford Developments Ltd | Construction | 2026 |
| Cringleford Heights Management Company Limited | Households | 2021 |
| Crinkle Consulting Limited | Administrative & support | 2010 |
| CRIS1144 Ltd | Transport & logistics | 2025 |
| Crisdar Ltd | Transport & logistics | 2019 |
| Crisdid Oltenia Limited | Hospitality | 2018 |
| Crisp Property Limited | Real estate | 2021 |
| Cristal Solutions (Norwich) Limited | Information & communication | 2023 |
| Crocus Writing Ltd | Professional & scientific | 2022 |
| Croft Consultancy East Anglia Limited | Construction | 2021 |
| Croft Medicolegal Reporting Limited | Health & social care | 2021 |
| Croft Street Management Limited | Households | 2005 |
| Cromag Ltd | Wholesale & retail | 2025 |
| Cromar Minimarket Ltd | Wholesale & retail | 2025 |
| Cromarty Homes Limited | Construction | 2021 |
| Cromer Property Corporation Holdings Limited | Real estate | 2024 |
| Cromer Property Corporation Limited | Real estate | 1983 |
| Cromer School Developments Limited | Construction | 1998 |
| Cromwell Barn Ltd | Arts & recreation | 2016 |
| Crook & Hatchet Ltd | Other services | 2015 |
| Crop Nutrition UK Ltd | Manufacturing | 2012 |
| Crop Shop 1980 Ltd | Other services | 2011 |
| Crop Shop 2026 Ltd | Other services | 2026 |
| Crop Systems Limited | Construction | 1998 |
| Crop Technologies Limited | Professional & scientific | 2016 |
| Croppers Since 1974 Limited | Other services | 2009 |
| Crosmo Ltd | Professional & scientific | 2026 |