| Campfire Equipment Rentals Limited | Reading | 2020 |
| Campfire Holdings North Limited | Harbour Walk | 2025 |
| Campfire Marketing Group Ltd | Cheltenham | 2019 |
| Camping International Holdings Limited | London | 2022 |
| Camping Property Holdings Limited | London | 2022 |
| Campion Capital Limited | London | 2003 |
| Campion Environmental Group Limited | Dover | 2021 |
| Campion Group Ltd | Aylesbury | 2023 |
| Campion Holdings Limited | Telford | 1996 |
| Campion Pickworth Ltd | Southwick | 2012 |
| Campions Group Limited | London | 2023 |
| Camplas Holdings Limited | Bridgend | 2021 |
| Campling Holdings Ltd | Truro | 2026 |
| Campo Trade UK Limited | Harrow | 2020 |
| Camposanto Ltd | London | 2017 |
| Campoy-Heneaux Ltd | London | 2020 |
| Campsie Canine Clippers Ltd | Coatbridge | 2015 |
| Campsie One Limited | Londonderry | 2017 |
| Campton (Financial Services) Limited | Ashford | 1978 |
| Campton Insurance Brokers (U.K.) Limited | Oxted | 1974 |
| Campton Underwriting Agents Limited | Oxted | 1964 |
| Campton Wealth Management Ltd | Shefford | 2025 |
| Campus Financial Services Ltd | Lytham St. Annes | 2013 |
| Campus Holdings Ltd | Birmingham | 2023 |
| Campus Living Villages (Portfolio Finance) UK Limited | Manchester | 2014 |
| Camrose Capital Limited | London | 2024 |
| Camryn Group Holdings Ltd | Wadebridge | 2022 |
| Camsail Estates Ltd | Beith | 2021 |
| Camsem Investment PLC | Cambridge | 2019 |
| Camster Executive Ltd. | Hounslow / Greater London | 2014 |
| Camster Nominee Holding Ltd | London | 2003 |
| Camtech Holdings Limited | Northampton | 2024 |
| Camtek Limited | Harrogate | 2022 |
| Camulod Ltd | London | 2018 |
| Camulodunum Investments Ltd | Leeds | 2017 |
| Camus Capital Ltd | Oxford | 2017 |
| Camus Holdings Ltd | Reading | 2022 |
| Camworth Holdings Limited | Stonehouse | 2023 |
| CAN Advertising (EOT) Limited | Windsor | 2025 |
| CAN Capital Investments Limited | Hitchin | 2023 |
| CAN UK Holdings Limited | Helsby | 2003 |
| CAN West Holdings Ltd | Bristol | 2022 |
| Can'T Believe This Name GOT Approved Ltd | Norwich | 2025 |
| Can-Do Capital Limited | Kingston Upon Thames | 2023 |
| Can-Do Finance Limited | Leeds | 2011 |
| Canaan Capital Limited | London | 2021 |
| Canaan Finance Ltd | London | 2019 |
| Canabeb Ltd | Portsmouth | 2020 |
| Canaccord Genuity Asset Management Limited | London | 1996 |
| Canaccord Genuity Hawkpoint Limited | London | 1999 |
| Canaccord Genuity Limited | London | 1983 |
| Canaccord Genuity Wealth Group Limited | London | 2005 |
| Canaccord Genuity Wealth Limited | London | 1999 |
| Canaccord Nominees Limited | London | 1994 |
| Canada Holdings Limited | Norwich | 2025 |
| Canada House Limited | Buckingham | 2019 |
| Canada Life Asset Management Limited | London | 1999 |
| Canada Life European Real Estate Limited | London | 1999 |
| Canada Life Finance (U.K.) Limited | London | 2002 |
| Canada Life Fund Managers (U.K.) Limited | London | 1987 |
| Canada Life Home Finance Trustee Limited | London | 2013 |
| Canada Life Limited | London | 1970 |
| Canada Life Platform Limited | London | 2013 |
| Canada Life Platform Nominee Limited | London | 2020 |
| Canada Life Sipp Trustee Limited | London | 2019 |
| Canada Life UK Holdings Limited | London | 2013 |
| Canada Life UK Staff Pension Trustee Limited | London | 2019 |
| Canada Rock Capital Limited | Milton Keynes | 2025 |
| Canada Square Funding 2020-1 Holdings Limited | London | 2020 |
| Canada Square Funding 2020-1 PLC | Basildon | 2020 |
| Canada Square Funding 2020-2 Holdings Limited | London | 2020 |
| Canada Square Funding 2020-2 PLC | Basildon | 2020 |
| Canada Square Funding 2021-1 Holdings Limited | London | 2021 |
| Canada Square Funding 2021-1 PLC | London | 2021 |
| Canada Square Funding 2021-2 Holdings Limited | London | 2021 |
| Canada Square Funding 2021-2 PLC | Basildon | 2021 |
| Canada Square Funding 6 Holdings Limited | London | 2021 |
| Canada Square Funding 6 PLC | London | 2021 |
| Canada Square Funding 7 Holdings Limited | London | 2022 |
| Canada Square Funding 7 PLC | Basildon | 2022 |
| Canada Square Funding 8 Holdings Limited | London | 2022 |
| Canada Square Funding 8 PLC | London | 2022 |
| Canada Square Operations Limited | London | 1994 |
| Canada Trailer Leasing Holdings Limited | London | 2024 |
| Canadian & Portland Estates (Holdings) Limited | Epsom | 2014 |
| Canadian Solar Poland Holding Ltd | London | 2018 |
| Canadian Solar Projects Taiwan UK Ltd | London | 2017 |
| Canadian Solar UK Ltd | London | 2014 |
| Canadian Solar UK Renewable Energy Corporation Ltd | London | 2022 |
| Canagan 2021 Limited | Watford | 2021 |
| Canagan Group Limited | Watford | 2021 |
| Canal & River Pension Partner Limited | Glasgow | 2012 |
| Canal Bidco Limited | Colchester | 2025 |
| Canal Garage Holdings Limited | Glasgow | 2022 |
| Canal Holdco Limited | Colchester | 2025 |
| Canal Midco Limited | Colchester | 2025 |
| Canal Wharf Holdings Ltd | Greenford | 2019 |
| Canarias Holding Ltd | London | 2019 |
| Canary Acquisitions Limited | Kington | 2025 |
| Canary Capital Ltd | Cardiff | 2022 |