| Cardarelli Group Services UK Ltd | Cardiff | 2025 |
| Cardcorp Ltd | Manchester | 2019 |
| Cardean Bell Limited | Salisbury | 2016 |
| Cardean Investments Limited | London | 2022 |
| Cardean Steam Railway Holdings Limited | Barnsley | 2026 |
| Cardel Group Limited | Baldock | 2017 |
| Carden Croft (2012) Limited | Stockport | 2012 |
| Carden Enterprises Limited | Aberdeen | 2026 |
| Carden IT Group Limited | Brighton | 2017 |
| Carden Oakley Property 2 Limited | London | 2011 |
| Cardens Limited | Westbury On Trym | 2002 |
| Cardens Pension Trustees Limited | Bristol | 1995 |
| Cardest Limited | London | 2017 |
| Cardfirst Limited | Congleton | 1994 |
| Cardif Insurance Holdings PLC | London | 1992 |
| Cardiff and Vale Group Ltd | Cardiff | 2024 |
| Cardiff Arena Ventures Limited | London | 2021 |
| Cardiff Auto Receivables Securitisation 2024-1 PLC | London | 2024 |
| Cardiff Auto Receivables Securitisation Holdings Limited | London | 2017 |
| Cardiff Auto Receivables Securitisation Holdings NO.2 Limited | London | 2024 |
| Cardiff Capital Holdings Limited | Newport | 2018 |
| Cardiff Financial Services Limited | Cardiff | 2021 |
| Cardiff Giant Holdings Limited | Pontyclun | 2023 |
| Cardiff Global Markets Limited | West Midlands, England, | 2017 |
| Cardiff Interchange Nomineeco Limited | London | 2023 |
| Cardiff Invest Ltd | Hounslow/Greater London | 2018 |
| Cardiff Investment Group Ltd | Newport | 2021 |
| Cardiff Lift Holdings Limited | Cardiff | 2023 |
| Cardiff Money Limited | Darlington | 2019 |
| Cardiff Mortgage & Financial Solutions Ltd | Newport | 2026 |
| Cardiff Mortgage Centre Ltd | Cardiff | 2011 |
| Cardiff Operating Group Limited | St Athan | 2019 |
| Cardiff Readymix Holdings Ltd | Taffs Well | 2026 |
| Cardiff University Pension Fund Trustee Limited | Bristol | 2025 |
| Cardigan Group Ltd | London | 2017 |
| Cardigan Street Holdings | London | 2024 |
| Cardinal Asset Management Limited | London | 2003 |
| Cardinal Business Finance Limited | Liverpool | 2010 |
| Cardinal Capital Group Ltd | Bristol | 2023 |
| Cardinal Capital Partners Limited | London | 2019 |
| Cardinal Commercial Group Ltd | London | 2023 |
| Cardinal Health Finance | Manchester | 1999 |
| Cardinal Healthcare Group Ltd | Cambridge | 2024 |
| Cardinal Holdings Ltd | Bromsgrove | 2025 |
| Cardinal Maritime Holdings Limited | Manchester | 2012 |
| Cardinal Property Group Limited | Bicester | 2011 |
| Cardinalis Holdings Limited | Cambridge | 2021 |
| Carding Mill Limited | Old Windsor | 2022 |
| Cardiologic Holdings Ltd | Thirsk | 2026 |
| Cardiomed Holding Ltd | London | 2024 |
| Cardioweb Ltd | Glasgow | 2020 |
| Cardium Outsourcing Holdings Limited | Manchester | 2022 |
| Cardo (Scotland) Holdings Limited | Aberdeen | 2024 |
| Cardo (Scotland) Limited | Livingston | 2021 |
| Cardo Group Limited | Cardiff | 2015 |
| Cardoc Holdings Limited | London | 2021 |
| Cardona & SON Limited | Hitchin | 2020 |
| Cardonald Financial Services Ltd | Glasgow | 1992 |
| Cardonaway Limited | London | 2025 |
| Cardone Ventures UK Ltd | London | 2024 |
| Cardox International Group Holdings Limited | Oldham | 2023 |
| Cardplot Technologies Limited | London | 2026 |
| Cardret Limited | London | 2014 |
| Cardrona Group Limited | Addlestone | 2025 |
| Cards Accepted Ltd | London | 2020 |
| Cards Investments Ltd | Tipton | 2025 |
| Cardwell Investment Technologies UK Limited | Gerrards Cross | 2008 |
| Cardy Investments Limited | Swansea | 2025 |
| Care & Investment Ltd | Edinburgh | 2022 |
| Care About Money Ltd | Manchester | 2021 |
| Care Adhd Holdings Limited | London | 2026 |
| Care and Wellbeing Holdings Limited | Basildon | 2024 |
| Care Blue Holdings Ltd | Bradford | 2025 |
| Care by Morris Ltd | Swansea | 2024 |
| Care Cash C.I.C. | Chatham | 2019 |
| Care Co Holdings Ltd | London | 2026 |
| Care Commercial Holdings Limited | Blackburn | 2023 |
| Care Concern Management OA Limited | Slough | 2007 |
| Care Concern Octo Limited | Slough | 2016 |
| Care Consortium Limited | Ingatestone | 2025 |
| Care Crew Global Ltd | Cardiff | 2019 |
| Care Crew Holdings Limited | Cardiff | 2023 |
| Care Dial Group Ltd | Buckingham | 2026 |
| Care Fertility Holdings Limited | Nottingham | 2019 |
| Care Fertility Topco Limited | Nottingham | 2022 |
| Care Financial Services Ltd | Leeds | 2020 |
| Care First Holdings Limited | London, | 2015 |
| Care Fulfilment Limited | Witham | 2010 |
| Care Holdings Limited | Leeds | 2009 |
| Care Home Action Group Limited | Cardiff | 2022 |
| Care Home Interiors Group Ltd | Alton | 2024 |
| Care Home Kent Holdco Limited | London | 2022 |
| Care Homes 3 Limited | London | 2006 |
| Care Homes Holdings Limited | London | 2006 |
| Care Homes T.R.W. (Holdings) Ltd | Peterborough | 2025 |
| Care in Finance Ltd | Ascot | 2011 |
| Care Interco Limited | London | 2020 |
| Care International Outreach Ltd | London | 2026 |
| Care Midco 1 Limited | London | 2020 |
| Care Midco 2 Limited | London | 2020 |