| Chase the Ball Ltd | Education | 2026 |
| Chatham Acquisitions Limited | Administrative & support | 2020 |
| Chatham Waters Care Home Limited | Construction | 2025 |
| Chatham Waters Care Ltd | Health & social care | 2025 |
| Chaudhry Property Services Limited | Households | 2014 |
| CHD Medical Ltd | Health & social care | 2020 |
| Check ME OUT. Ltd | Information & communication | 2022 |
| Chelsea Lauren Limited | Other services | 2024 |
| Chenderit School Academy Trust | Education | 2012 |
| Cheney Cars Limited | Professional & scientific | 1994 |
| Cheney Coaches Limited | Transport & logistics | 1980 |
| Cheney Holdings Limited | Financial services | 2021 |
| Cheney Site Supervision Limited | Construction | 2007 |
| Cherry Lets Limited | Real estate | 2012 |
| Cherwell Business Awards Limited | Professional & scientific | 2016 |
| Cherwell Business Services Ltd | Professional & scientific | 2014 |
| Cherwell Cabs Ltd | Transport & logistics | 2011 |
| Cherwell Cars Banbury Ltd | Transport & logistics | 2019 |
| Cherwell Construction & Utilities Ltd | Construction | 2014 |
| Cherwell Counselling Centre Ltd | Health & social care | 2010 |
| Cherwell Edge Golf Club Ltd | Arts & recreation | 1993 |
| Cherwell Electrical Supplies Ltd | Wholesale & retail | 2006 |
| Cherwell Farming Limited | Agriculture & fishing | 2018 |
| Cherwell Fencing Limited | Construction | 2009 |
| Cherwell Financial Services Limited | Financial services | 2013 |
| Cherwell Fire Safety Limited | Manufacturing | 2012 |
| Cherwell Garden Machinery Limited | Manufacturing | 2007 |
| Cherwell Gate Residents Management Company Limited | Households | 2007 |
| Cherwell HCW Ltd | Other services | 2017 |
| Cherwell Heights Dental Care Limited | Health & social care | 2008 |
| Cherwell Holdings Limited | Financial services | 2016 |
| Cherwell Hotels Limited | Hospitality | 2015 |
| Cherwell Legionella Consultancy Ltd | Professional & scientific | 2026 |
| Cherwell Office Supplies Ltd | Administrative & support | 2014 |
| Cherwell Optical Ltd | Manufacturing | 2010 |
| Cherwell Plumbing&Heating Ltd | Construction | 2024 |
| Cherwell Tandoori Ltd | Hospitality | 2018 |
| Cherwell Trophies Ltd | Wholesale & retail | 2021 |
| Cherwell Valley International Limited | Extraterritorial | 1971 |
| Cherwell Valley Silos Limited | Manufacturing | 1961 |
| Cherwell Yoga Ltd. | Information & communication | 2004 |
| Chester Hayes Limited | Professional & scientific | 2015 |
| Chesterton Farming Limited | Agriculture & fishing | 2013 |
| Chestnut Consulting Limited | Information & communication | 2009 |
| Chestnut Osteopathic Practice Ltd | Health & social care | 2026 |
| Chicshine Ltd | Wholesale & retail | 2023 |
| Chikoz Limited | Transport & logistics | 2024 |
| Child and Educational Psychology Support Ltd | Education | 2024 |
| Child Health Innovations LLP | | 2022 |
| Chiles Project Management Solutions Limited | Professional & scientific | 2024 |
| Chill Select Ltd | Information & communication | 2022 |
| China Town Limited | Hospitality | 2021 |
| Chipex Limited | Manufacturing | 2009 |
| Chipping Norton Glass Ltd | Professional & scientific | 2009 |
| Chocsweet Ltd | Hospitality | 2022 |
| Chosen BUN Holdings Limited | Extraterritorial | 2016 |
| Chris Elvidge Ltd | Information & communication | 2017 |
| Chris Hughes Hypnosis Ltd | Other services | 2010 |
| Chris Ingram Edms Limited | Information & communication | 2010 |
| Christian Business Leaders Limited | Other services | 2012 |
| Christian Heritage Trust UK | Arts & recreation | 2009 |
| Christine Norman Ltd | Wholesale & retail | 2019 |
| Christopher Bell Limited | Manufacturing | 1996 |
| Christopher Dean & Co | Professional & scientific | 2002 |
| Church House Brasserie Ltd | Hospitality | 2020 |
| Church House Restaurant Ltd | Hospitality | 2014 |
| Church Street Residents Association Limited | Households | 1995 |
| Churchill Surfacing Contractors Ltd | Construction | 2022 |
| Chyvin Global Limited | Information & communication | 2024 |
| Cieloch Car Automotive Ltd | Wholesale & retail | 2018 |
| Cinnamon HR Consultancy Limited | Professional & scientific | 2018 |
| Cipriantcm Ltd | Transport & logistics | 2025 |
| Circular Plastics- Accelerating Growth LLP | | 2023 |
| Citywise Roofing Ltd | Construction | 2022 |
| Ciuchis Limited | Transport & logistics | 2022 |
| Civilstone Ltd | Construction | 2025 |
| CKC3 Limited | Professional & scientific | 2014 |
| Claire Ford VP Ltd | Professional & scientific | 2023 |
| Claire Real Estate Limited | Real estate | 2006 |
| Clare Bramley Consulting Ltd | Other services | 2017 |
| Clare Nash Architecture Ltd | Professional & scientific | 2016 |
| Clare’S Daily Edit Ltd | Arts & recreation | 2025 |
| Clariqua Ltd | Manufacturing | 2025 |
| Clarit Consultants Limited | Information & communication | 2015 |
| Clark OH Limited | Health & social care | 2004 |
| Clarkstown Connemara Ponies Partnership LLP | | 2015 |
| Clarol Ltd | Construction | 2018 |
| Class by Sonila Ltd | Other services | 2017 |
| Classic Automotors Ltd | Wholesale & retail | 2023 |
| Classic Homes Property Ltd | Real estate | 2025 |
| Claude&Croft’S Distribution Limited | Wholesale & retail | 2025 |
| Claydon Plot Owners' Management Company Limited | Professional & scientific | 2022 |
| Clayton Asset Management Limited | Real estate | 2002 |
| CLD Trustees Limited | Administrative & support | 2025 |
| Clean Genie OX Limited | Administrative & support | 2025 |
| Clean Genie Reading Limited | Administrative & support | 2018 |
| Clean in the Country Limited | Administrative & support | 2022 |
| Clean Sweep Hire Limited | Extraterritorial | 2023 |
| Cleanpark Limited | Professional & scientific | 1990 |
| Cleantoday Ltd | Administrative & support | 2024 |