| Cafe India (A5) Staffordshire Ltd | Hospitality | 2019 |
| Cafe Manhattan Ltd | Hospitality | 2020 |
| Cafe Milano Limited | Hospitality | 2021 |
| Cafferkey Distributions Ltd | Wholesale & retail | 2026 |
| Caffluence Online Business Solutions Limited | Wholesale & retail | 2022 |
| Café Charlotte Ltd | Hospitality | 2015 |
| Cahoonas (London) Ltd | Other services | 2017 |
| Cailby Developments Ltd | Real estate | 2015 |
| Cairns Court Company (Norwich) Limited(The) | Households | 1983 |
| Cairo’S Kitchen Ltd | Hospitality | 2026 |
| Caister Beach Ltd | Real estate | 2021 |
| Caister Tyre Centre Limited | Wholesale & retail | 2020 |
| Caistor Properties Limited | Real estate | 2004 |
| Caistor Roman Project Limited | Professional & scientific | 2009 |
| Caius Court Residents Association Limited | Households | 1998 |
| CAJ Composites Ltd | Manufacturing | 2021 |
| Caje Systems Ltd | Professional & scientific | 2022 |
| Cake People Development Ltd | Administrative & support | 2016 |
| Cakes Lighting Ltd | Construction | 2022 |
| Cakmak Limited | Wholesale & retail | 2022 |
| Calabar Kitchen 1 London Limited | Hospitality | 2013 |
| Calathea Clinic Limited | Health & social care | 2025 |
| Caldecott Developments Limited | Construction | 2021 |
| Calderdale Norse Limited | Water & waste | 2025 |
| Caledon MGA Ltd | Financial services | 1996 |
| Calibre Farming Limited | Agriculture & fishing | 2000 |
| Calibre Installations Norfolk Ltd | Construction | 2022 |
| Calibre Products Ltd | Wholesale & retail | 2014 |
| Calidad Home Limited | Wholesale & retail | 2020 |
| Callaby Ltd | Professional & scientific | 2017 |
| Callender Construction Services Ltd | Construction | 2012 |
| Calleo Hseq Services Ltd | Construction | 2021 |
| Calm Cats Ltd | Health & social care | 2019 |
| Calm Seas Software Consultancy Limited | Information & communication | 2005 |
| Calm Waters Marine Fabrication Limited | Manufacturing | 2011 |
| Calm Within Therapy Limited | Health & social care | 2023 |
| Calorix Ltd | Professional & scientific | 2025 |
| Calthorpe Farm Limited | Agriculture & fishing | 1982 |
| Calthorpe Green Management Association Limited | Households | 1992 |
| Calthorpe Homes Ltd | Real estate | 2024 |
| Calumet Photographic Ltd | Wholesale & retail | 1946 |
| Calyx Neurological Services (CNS) Limited | Health & social care | 2018 |
| Calzone Pizza Ltd | Administrative & support | 2017 |
| CAM Architects Ltd | Professional & scientific | 2003 |
| CAM Architectural Limited | Professional & scientific | 2021 |
| CAM Eco Consultancy Ltd | Professional & scientific | 2023 |
| CAM Partnership Limited | Professional & scientific | 2015 |
| Camara & Alves Sports Management Ltd | Arts & recreation | 2022 |
| Camberwell Technical Services LLP | | 2011 |
| Cambiare Consultancy Ltd | Information & communication | 2020 |
| Cambium Bespoke Ltd | Manufacturing | 2019 |
| Cambium Consulting Limited | Professional & scientific | 2018 |
| Cambridge Bath & Wetrooms Limited | Construction | 2014 |
| Cambridge Conference Solutions Limited | Administrative & support | 2013 |
| Cambridge Consulting Solutions Limited | Professional & scientific | 2018 |
| Cambridge Corporation Limited | Real estate | 2019 |
| Cambridge Court Management Company Limited | Households | 1980 |
| Cambridge Discovery Limited | Professional & scientific | 2019 |
| Cambridge Dog Centre Ltd | Other services | 2016 |
| Cambridge Medical Reporting Limited | Health & social care | 2019 |
| Cambridge Norwich Labs Ltd | Professional & scientific | 2023 |
| Cambridge Oak Ltd | Manufacturing | 2023 |
| Cambridge Open Engineering Limited | Manufacturing | 2020 |
| Cambridge Real Estate Investments Limited | Real estate | 2014 |
| Cambridge Smart Ltd | Construction | 2023 |
| Cambridge Street Garages Management Company Limited | Households | 2018 |
| Cambridge Tax Consulting Limited | Professional & scientific | 2009 |
| Cambridge Wealth Management Limited | Financial services | 2009 |
| Cambridge Wills & Legal Services Limited | Professional & scientific | 2015 |
| Cambridge-Brewery Limited | Manufacturing | 2012 |
| Camden Sawyer Limited | Professional & scientific | 2019 |
| Camel Travel and Tours Limited | Administrative & support | 2024 |
| Cameron Creative Ltd | Administrative & support | 2004 |
| Cameron's Juice Bar Ltd | Hospitality | 2026 |
| Camilla Brides Ltd | Wholesale & retail | 2026 |
| Camille T Limited | Wholesale & retail | 2025 |
| Camino Consulting Limited | Professional & scientific | 2018 |
| Cammbi Limited | Wholesale & retail | 2018 |
| Camp Cosplay Events Ltd | Arts & recreation | 2024 |
| Camp Pro Limited | Wholesale & retail | 2025 |
| Campbell Stevens Associates Limited | Professional & scientific | 2013 |
| Campfire Creative Limited | Information & communication | 2014 |
| Campos Ltd | Construction | 2025 |
| Campos,Craig & Cunha Ltd | Professional & scientific | 2018 |
| Camscapes Landscaping Ltd | Administrative & support | 2026 |
| Camttec Healthcare Limited | Health & social care | 2015 |
| Camvent Ltd | Administrative & support | 2014 |
| CAN BUT TRI Ltd | Arts & recreation | 2018 |
| Can'T Believe This Name GOT Approved Ltd | Financial services | 2025 |
| Canada Holdings Limited | Financial services | 2025 |
| Canaries Home Improvements Ltd | Construction | 2025 |
| Canaries Solutions Ltd | Health & social care | 2019 |
| Canary (Bidco) Limited | Administrative & support | 2022 |
| Canary (Midco 1) Limited | Administrative & support | 2022 |
| Canary (Midco 2) Limited | Administrative & support | 2022 |
| Canary Actuarial Consulting Limited | Professional & scientific | 2008 |
| Canary Care Nationwide Ltd | Administrative & support | 2024 |
| Canary Care Somerset Ltd | Administrative & support | 2024 |
| Canary Convenience Store Ltd | Wholesale & retail | 2020 |
| Canary Corporation Ltd | Transport & logistics | 2019 |