| Cara Sweets Treats Gifts Ltd | Clacton-On-Sea | 2022 |
| Cara Tonkin Ltd | Lewes | 2025 |
| Cara-Doc Limited | Ivybridge | 2014 |
| Cara-Veranda Limited | Filey | 2003 |
| Caraboo Ltd | London | 2015 |
| Carabuild Park & Leisure Homes Ltd | Beverley | 2012 |
| Caracal Holdings Limited | London | 2020 |
| Caracal Services Limited | Petersfield | 2002 |
| Caractacus Spirits Ltd | Canvey Island | 2024 |
| Caradell Engineering Limited | Birmingham | 2019 |
| Carafro Limited | London | 2025 |
| Carallon Holdings Limited | London | 2010 |
| Carallon Ltd | London | 2004 |
| Caramalt Ltd | Sheffield | 2025 |
| Caramel Bakery Limited | London | 2023 |
| Caramelo Kids Ltd | Essex | 2018 |
| Caramôn Cyfyngedig | Bangor | 2020 |
| Carantoc Art Ltd | Weston-Super-Mare | 2022 |
| Carapace Slate Limited | Cowbridge | 2016 |
| Caraparts (Wroxham) Limited | Norwich | 2025 |
| Carapax Limited | London | 1997 |
| Carasecurity Limited | Slough | 2018 |
| Caraselle Limited | Brighton | 1982 |
| Caraserve Kent Ltd | Deal | 2025 |
| Carat Atelier Limited | London | 2025 |
| Carat Crazy Jewellers Ltd | London | 2023 |
| Carate Shine Ltd | Stafford | 2023 |
| Caratek Limited | Rhyl | 2021 |
| Caratiff Investment Group (UK) Limited | Cambridge | 2018 |
| Caravan & Motorhome Solutions Limited | Chard | 2010 |
| Caravan Accessories C.A.K. Tanks Ltd. | Warwickshire | 1998 |
| Caravan and Holiday Home Services Limited | Cottingham | 2002 |
| Caravan and Motorhome Services Limited | Caerphilly | 2007 |
| Caravan and Motorhome Services North West Ltd | Leyland | 2013 |
| Caravan and Motorhome Servicing Specialist Ltd | Market Drayton | 2025 |
| Caravan Beds Limited | Nettlestead | 2023 |
| Caravan Care Installations Ltd | Rainworth, Mansfield | 2022 |
| Caravan Check Limited | London | 2007 |
| Caravan Coffee Roasters Limited | London | 2014 |
| Caravan Enterprise Limited | Hull | 2024 |
| Caravan Genie Ltd | Brough | 2022 |
| Caravan Park Electrical Services Limited | Lincs | 1981 |
| Caravan Repairs Limited | Radstock | 2008 |
| Caravan Service 2 U Ltd | Snodland | 2024 |
| Caravan Service and Repairs Ltd | Bordon | 2021 |
| Caravan Services Ltd | King'S Lynn | 2025 |
| Caravan Servicing 4U Ltd | Blandford Forum | 2013 |
| Caravan Servicing Near U Ltd | Torpoint | 2024 |
| Caravan Support Ltd | Malton | 2023 |
| Caravan Tech Services Limited | Etchingham | 1999 |
| Caravan Testing Services Limited | Sheffield | 2018 |
| Caravanalia Ltd | Llandudno | 2017 |
| Caravancare Ltd | Northwich | 2009 |
| Caravandays Ltd | Salisbury | 2024 |
| Caravanpanels Ltd | Preston | 2015 |
| Caravel Products Ltd | Kidderminster | 2017 |
| Caraversions Ltd | Newbury | 2019 |
| Carawagon Ltd | Lyndhurst | 2000 |
| Carb-Off! Limited | Letchworth Garden City | 2024 |
| Carbara Limited | London | 2016 |
| Carbbind UK Limited | Weybridge | 2025 |
| Carben Fabrications Limited | Batley | 2018 |
| Carbeon Energy Ltd | Fleet | 2025 |
| Carberry Candles Ltd | Haddington | 2025 |
| Carbex Limited | Brierley Hill | 2000 |
| Carbide (UK) Limited | Hull | 2016 |
| Carbide Dies (Birmingham) Limited | Crewe | 1981 |
| Carbinium Engineering Limited | Chichester | 2015 |
| Carbo Developments Limited | Wimborne | 2021 |
| Carbogen Amcis Limited | Lancashire | 2005 |
| Carbogenics Ltd | Edinburgh | 2016 |
| Carbohydrate Synthesis Ltd. | Oxford | 1997 |
| Carbolic Smoke Ball Company (1893) Limited | London | 2005 |
| Carbolic Smoke Ball Company Limited | London | 2009 |
| Carbolite Gero Limited | Hope Valley | 1978 |
| Carbolts Ltd | Sowerby Bridge | 2018 |
| Carbomo UK Ltd | Cardiff | 2017 |
| Carbon & Calamus Ltd | Kington | 2026 |
| Carbon & Paint Services Ltd | Cambridge | 2019 |
| Carbon & Tyde Ltd | Buntingford | 2018 |
| Carbon 6IX Ltd | Newport | 2013 |
| Carbon Activated Ltd | Bristol | 2011 |
| Carbon and Steel Ltd | Burgess Hill | 2020 |
| Carbon Apex Ltd | Bicester | 2026 |
| Carbon Application Technology Limited | Stafford | 2000 |
| Carbon Arts and Crafts Limited | Barnet | 2020 |
| Carbon CAN Company (UK) Ltd | Ormskirk | 2017 |
| Carbon Chem Ltd | Rochdale | 2025 |
| Carbon Clean Solutions Limited | London | 2012 |
| Carbon Collective Limited | Woodford Halse, Daventry | 2018 |
| Carbon Colour Company Limited | Abingdon | 1995 |
| Carbon Component Solutions Ltd | Silverstone | 2015 |
| Carbon Composite Solutions Ltd | Banbury | 2025 |
| Carbon Composites Ltd | London | 2025 |
| Carbon Compost Company Limited | Exeter | 2010 |
| Carbon Concepts Limited | Belper | 1995 |
| Carbon Copies Ltd | Earl Shilton | 2023 |
| Carbon Creative Car Parts Ltd | Erith | 2018 |
| Carbon Creative Manufacturing Limited | Bicester | 2012 |
| Carbon Crown London Ltd | London | 2026 |