| Canterbury Beds Limited | Maidstone | 1999 |
| Canterbury Brewing Company Limited | Middlesex | 2002 |
| Canterbury European Fashionwear Limited | London | 2010 |
| Canterbury Masala Ltd | Kent | 2019 |
| Canterbury Private and Commercial Properties Limited | Canterbury | 2021 |
| Canterbury Records Limited | Canterbury | 2015 |
| Canterbury Self Storage Limited | Dover | 2009 |
| Canterbury Tender Care Nursery Ltd | Croydon | 2017 |
| Cantercare | Canterbury | 1992 |
| Cantermore Ltd | Salford | 2012 |
| Cantiaci Limited | Sevenoaks | 2025 |
| Cantine Limited | London | 2025 |
| Cantium Publishing Limited | Tonbridge | 1994 |
| Canton Express Dumfries Limited | Glasgow | 2018 |
| Cantua Contracting Limited | Hornchurch | 2018 |
| Cantwell Grove Trustees Limited | Belper | 2016 |
| Canvas Accounting Limited | Tadcaster | 2026 |
| Canvas of Life Ltd | London | 2019 |
| Canvascraft Creative Ltd | Ipswich | 2026 |
| Canvey Building Supplies Limited | Benfleet | 2014 |
| Canvey Skip Hire Limited | Essex | 1993 |
| Canvins Holdings Limited | Maidstone | 2022 |
| Cany Furniture Limited | London | 2021 |
| Canyon Trading (UK) Limited | Newmarket | 1990 |
| Canyon Yachting UK Ltd | Bromley | 2024 |
| Canzone Limited | London | 2019 |
| CAP Chemicals Ltd | London | 2016 |
| CAP Consultancy Limited | Sutton | 2020 |
| CAP Energy Holdings Ltd | London | 2022 |
| CAP Fixings Limited | Chorley | 2011 |
| Capability Costing Limited | Wokingham | 2014 |
| Capada Invest Ltd | Dover | 2024 |
| Capada Ltd | Dover | 2024 |
| Capaldi Limited | Harrogate | 2025 |
| Caparo (LTI) Limited | London | 1982 |
| Caparo Investments Limited | London | 1971 |
| Caparo Properties Limited | London | 2012 |
| Caparo Tea Company Limited | London | 2012 |
| Capco Investment London (NO.6) Limited | Edinburgh | 2022 |
| Capco Products Limited | Chipping Sodbury | 1983 |
| Cape Good Hope Limited | Mauchline | 2003 |
| Cape Mohair Topmakers Limited | Bradford | 2001 |
| Cape Verde Exclusive Ltd | Warwickshire | 2007 |
| Cape Wools International Limited | Bradford | 2001 |
| Cape Yachting Limited | London | 2017 |
| Capecastle Lime Works Limited | Ballymoney | 1941 |
| Capechase Limited | London | 1986 |
| Capecito Ltd | London | 2021 |
| Capeclear Asset Management Limited | Carmarthen | 2001 |
| Capel Fencing Limited | Tonbridge | 2019 |
| Capel Tree Services Limited | Tonbridge | 2019 |
| Capemanse Limited | Dunfermline | 2001 |
| Capeq Limited | Hove | 2014 |
| CAPEW2 Ltd | London | 2018 |
| Capewell Management Ltd | Edinburgh | 2012 |
| Capex Funding Limited | Maidstone | 2009 |
| Capexsales Limited | Sutton Coldfield | 2010 |
| Capien Group Ltd | Cullompton | 2020 |
| Capiex Limited | | 2008 |
| Capita Life and Pensions International Limited | London | 2006 |
| Capital & Counties CG Nominee Limited | London | 2006 |
| Capital 4 Group Limited | Newcastle Upon Tyne | 2012 |
| Capital 4 Holdings Limited | Newcastle Upon Tyne | 2012 |
| Capital a List Limited | London | 2013 |
| Capital Advisory Group (UK) Limited | Lincoln | 2012 |
| Capital Advisory Strategies Ltd | London | 2022 |
| Capital Assets (NE) Ltd | Sutton Coldfield | 2023 |
| Capital Bank Leasing 5 Limited | Chester | 1959 |
| Capital Bank Property Investments (3) Limited | London | 1988 |
| Capital Business Network Group Ltd | London | 2025 |
| Capital Cables Limited | Newbury | 2000 |
| Capital Chefs Recruitment Group Ltd | Broadstone | 2023 |
| Capital City Rentals Limited | Newtownabbey | 1991 |
| Capital Cleaning Services Limited | Worthing | 2014 |
| Capital Commodities Limited | Harrow | 2021 |
| Capital Concierge Limited | Newton-Le-Willows | 2019 |
| Capital Contracts (SW) Ltd | Weston-Super-Mare | 2016 |
| Capital Corporation (Holdings) Limited | Birmingham | 1991 |
| Capital Deep Clean Services Limited | London | 2009 |
| Capital Double Ltd | London | 2015 |
| Capital Engraving Limited | Station Road, Steeton, Bradford | 2000 |
| Capital First Fribourg SA / Ltd | London | 2019 |
| Capital First Nord NE SA / Ltd | London | 2018 |
| Capital Flats Limited | London | 1998 |
| Capital Freeholds Limited | Woking | 1973 |
| Capital Galvanizing Limited | West Midlands | 1960 |
| Capital GAP Limited | Edinburgh | 2016 |
| Capital GP Services Ltd | Sutton | 2025 |
| Capital Grow for Investment Limited | Manchester | 2026 |
| Capital Invest International Limited | London | 2018 |
| Capital Law Solicitors Limited | Cardiff | 2009 |
| Capital Media Event Productions Ltd | Enfield | 2009 |
| Capital Mobility Ltd | Caterham | 2021 |
| Capital Motor Company Limited | Milton Keynes | 2007 |
| Capital Motor Group Limited | Wallsend | 2018 |
| Capital on TAP Limited | London | 2015 |
| Capital Outsourcing Limited | Birmingham | 2019 |
| Capital PHC Ltd | Edinburgh | 2009 |
| Capital Pizza Realty Limited | Banbury | 2015 |
| Capital Property Management & Investment Limited | Rickmansworth | 2002 |