| C. Allen Electrical Ltd | Energy | 2015 |
| C. D. R. Engineering Services Limited | Professional & scientific | 1997 |
| C. Dominic Group Ltd | Professional & scientific | 2025 |
| C. Dominic Management Group Ltd | Financial services | 2025 |
| C.A.B Roofing Services Ltd | Construction | 2023 |
| C.Dominic International Group Ltd | Administrative & support | 2025 |
| C.E.N Ventures Limited | Financial services | 2026 |
| C.J. Redemption & Renovation Ltd | Other services | 2025 |
| C.J.I. Cricket Limited | Other services | 2013 |
| C.S. Plastering (Dorset) Ltd | Construction | 2020 |
| C.W.L Greens Ltd | Information & communication | 2025 |
| C0D3R Ltd. | Information & communication | 2006 |
| C2O Coffee Ltd | Wholesale & retail | 2023 |
| C86 Signs & Graphics Ltd | Professional & scientific | 2023 |
| CA Financial Solutions Ltd | Professional & scientific | 2024 |
| Cabletech (South) Limited | Information & communication | 1999 |
| CAD Engineering Consulting Ltd | Professional & scientific | 2022 |
| CAD Office Limited | Professional & scientific | 2016 |
| Cad-Cam Solutions Ltd | Manufacturing | 2016 |
| Cadence Publishing Limited | Information & communication | 2020 |
| Cadjad Ltd | Professional & scientific | 2017 |
| Cadogan Freehold Limited | Households | 2006 |
| Cadtek (UK) Limited | Professional & scientific | 2011 |
| Caerlyon House Limited | Households | 2011 |
| Cafe Aroma (Bournemouth) Ltd | Hospitality | 2020 |
| Cafe DE Lumiere Limited | Construction | 2004 |
| Cafe Fifty Two Ltd | Hospitality | 2024 |
| Cafe Pacifico Ltd | Hospitality | 2026 |
| Cafe Riva Limited | Hospitality | 2004 |
| Caffe.Point Limited | Hospitality | 2014 |
| Caiman Ltd | Health & social care | 2014 |
| Cain and Fuller Lettings Limited | Real estate | 2013 |
| Cairngorms Activities Ltd | Administrative & support | 2020 |
| Cairo Cafe Limited | Hospitality | 2020 |
| Cairo Kebab Limited | Hospitality | 2019 |
| Cake Seven Ltd | Wholesale & retail | 2024 |
| Caktus Limited | Manufacturing | 2012 |
| Calabrese Ltd | Hospitality | 2024 |
| Calculated Consulting Ltd | Professional & scientific | 2023 |
| Caldana Limited | Professional & scientific | 2010 |
| Caledonian Court (Bournemouth) Limited | Households | 1994 |
| Caledonian Tomarense Holdings Ltd | Real estate | 2025 |
| Calendula Assets Limited | Construction | 2016 |
| Calendula Services Limited | Households | 2017 |
| Caliber Barbering Ltd | Other services | 2024 |
| California Express Limited | Real estate | 1999 |
| Calin Constantine Construction Limited | Construction | 2023 |
| Calleden (UK) Limited | Professional & scientific | 2023 |
| Callfix AI Ltd | Other services | 2025 |
| Callie ANN Lashes and Brows Limited | Other services | 2020 |
| Callin Watch Care Ltd | Other services | 2025 |
| Callisto Blue Limited | Information & communication | 2015 |
| Calm & Bright Limited | Health & social care | 2014 |
| Calm Down Dawg Ltd | Hospitality | 2018 |
| Calm Learning Ltd | Education | 2024 |
| Calm Waters Dorset Ltd | Health & social care | 2026 |
| Calman Consulting Ltd | Information & communication | 2017 |
| Calypso Holdings Limited | Financial services | 2024 |
| Calyxco Ltd | Health & social care | 2021 |
| Camber Logic Ltd | Information & communication | 2026 |
| Cambridge Christmas Markets Ltd | Wholesale & retail | 2023 |
| Cambridge Court (Ferndown) Limited | Households | 2009 |
| Camden Hurst (Milford) Freehold Company Limited | Households | 1982 |
| Camden Hurst (Milford) Management Company Limited | Households | 1975 |
| Camellia Court (Southbourne) Management Limited | Households | 2007 |
| Camellia Court RTM Company Limited | Households | 2024 |
| Camerons Lettings Ltd | Real estate | 2015 |
| Camo Property Ltd | Construction | 2024 |
| Campala Consulting Ltd | Professional & scientific | 2024 |
| Campala Limited | Information & communication | 2023 |
| Campbell Court Management (Bournemouth) Limited | Households | 1989 |
| Campervan Life Limited | Wholesale & retail | 2020 |
| Campmates Limited | Hospitality | 2015 |
| Canaberry Limited | Education | 2019 |
| Canavan Capital Limited | Real estate | 2023 |
| Candy and Cakes Ltd | Manufacturing | 2013 |
| Candy Traditional Fish Chips Ltd | Hospitality | 2024 |
| Cane Medical Services Ltd | Health & social care | 2025 |
| Canford Accounting Ltd | Professional & scientific | 2025 |
| Canford Blue III Limited | Real estate | 2015 |
| Canford Blue IV Limited | Construction | 2016 |
| Canford Cliffs 138 Limited | Real estate | 2012 |
| Canford Cliffs Developments Limited | Construction | 2017 |
| Canford Colours Ltd | Information & communication | 2017 |
| Canford Court (Management) Limited | Households | 2004 |
| Canford Electrical Ltd | Construction | 2024 |
| Canford Enterprises Limited | Wholesale & retail | 2007 |
| Canford Finance Limited | Financial services | 2020 |
| Canford Lodge Management Limited | Households | 2002 |
| Canford Place (Management) Limited | Households | 1997 |
| Caninecheck Ltd | Information & communication | 2026 |
| Canli Smith Consulting Ltd | Professional & scientific | 2026 |
| Cannadox Limited | Wholesale & retail | 2019 |
| Cannien Ltd | Wholesale & retail | 2019 |
| Cannon Estates Limited | Construction | 2013 |
| Canterbury Movie Ltd | Information & communication | 2025 |
| Canvas Metro Ltd | Construction | 2025 |
| CAP Player Limited | Information & communication | 2023 |
| Capability Consultancy Ltd | Professional & scientific | 2024 |
| Capehome London Limited | Construction | 2002 |