| Carolinas Enterprises Limited | Weybridge | 2002 |
| Caroline Amanda Mansfield Limited | Radlett | 2021 |
| Caroline Amanda Russ Limited | Radlett | 2021 |
| Caroline Angela Hibbert Ltd | London | 2023 |
| Caroline Court 2020 Limited | Edgware | 2020 |
| Caroline Girvan Fitness Ltd | Belfast | 2022 |
| Caroline Louise Dyson Ltd | Ossett | 2025 |
| Caroline Margaret Mcgilligan Ltd | Dungiven | 2024 |
| Caroline Mosdell Limited | Northam | 2025 |
| Caroline Newman Ltd | London | 2024 |
| Caroline O'Brien Limited | Coventry | 2013 |
| Caroline Parent Ltd | Hastings | 2025 |
| Caroline Rose Fraser Ltd | Glasgow | 2024 |
| Carolinna Duarte Ltd | London | 2013 |
| Carolney Ltd | Plymouth | 2024 |
| Carolyn Susan Cygan-Dawson Limited | Truro | 2025 |
| Caron Care Ltd | Pontprennau | 2018 |
| Carouge Heritage Ltd | London | 2025 |
| Carp Connection Ltd | Swansea | 2014 |
| Carp Junkie Ltd | Waterlooville | 2024 |
| Carpanini's Carpentry Ltd | Bexleyheath | 2023 |
| Carpathia Ventures Limited | Brackley | 2014 |
| Carpe Diem Limited | London | 1992 |
| Carpenders Park Garden Centre Limited | Carpenders Park, Watford | 2007 |
| Carpenter Oak Group (EOT) Limited | Stone | 2023 |
| Carpenters 1964 Limited | Camborne | 2014 |
| Carpenters Mate Limited | Maidstone | 2007 |
| Carpentry Craft Limited | Bracknell | 2014 |
| Carpet & Flooring (Trading) Limited | Redditch | 2022 |
| Carpet Barn Limited | Bournemouth | 1990 |
| Carpet Cleaner London Ltd | Enfield | 2011 |
| Carpet Cleaning N.I. Ltd | Omagh | 2024 |
| Carpet Corner Limited | Croydon | 2009 |
| Carpet Deals Group Limited | Chippenham | 2023 |
| Carpet Deals Limited | Chippenham | 2023 |
| Carpet Demon Limited | Watnall | 2016 |
| Carpet Line Direct Limited | Worcester | 2020 |
| Carpet Moods (UK) Limited | Basildon | 1993 |
| Carpet Options and Interiors Ltd | Bristol | 2016 |
| Carpet Runners Ltd. | Grimsby | 2018 |
| CARPETCLEARANCE4U Limited | Preston | 2021 |
| Carpetmania Limited | Rotherham | 2001 |
| Carpets International Overseas Limited | Nr. Halifax | 1953 |
| Carpetworld Manchester Limited | Redditch | 2002 |
| Carquee Limited | Gillingham | 2024 |
| Carr Engineering Limited | Farnham | 1993 |
| Carr Haulage Company Limited | Mirfield | 1920 |
| Carr House 1960 Limited | Oldham | 2013 |
| Carr Lane Limited | Horwich | 2002 |
| Carr Lane UK Limited | Bolton | 2002 |
| Carr Properties (Holdings) Ltd | Altrincham | 2017 |
| Carr Road NO 82 & 84 Limited | London | 2006 |
| Carra Business Solutions Limited | West Yorkshire | 1998 |
| Carral Ltd | London | 2025 |
| Carramore Homes Limited | Telford | 2010 |
| Carran House Limited | Hillsborough | 2020 |
| Carrara Coffee Roasters Limited | Market Harborough | 2010 |
| Carrdavis Motorcycles Ltd | Bristol | 2026 |
| Carren Developments Limited | Bangor | 1983 |
| Carrhill Power Limited | Nr Newark | 2016 |
| Carriage Way 1968 Limited | Newark | 2014 |
| Carriages Tearoom (Northumberland) Ltd | Wark | 2001 |
| Carriages Tearooms Ltd | Fen Drayton | 2013 |
| Carrick Drive 1958 Limited | Maybole | 2014 |
| Carrick Hire Centre Ltd | Belfast | 2021 |
| Carrick Packaging Limited | Glasgow | 2013 |
| Carrick Rangers (Holding) Limited | Belfast | 2016 |
| Carrick Therapeutics UK Limited | London | 2015 |
| Carrickfergus Glass & Glazing Contractors Ltd | Co Antrim | 1995 |
| Carrickfergus Marina Apartments Services Limited | Ballyclare | 2000 |
| Carrickshane Management Co. Ltd | Newry | 2008 |
| Carrig-Na-Cule Management Services Company Limited | Antrim | 2003 |
| Carrigart Crescent Management Company Limited | Ballyclare | 2004 |
| Carrigart Manor Management Company Limited | Ballyclare | 2004 |
| Carrington and Dewhurst Limited | Uxbridge | 1930 |
| Carrington Caravan Care Ltd | Manchester | 2012 |
| Carrington Cockers Ltd | Camberley | 2002 |
| Carrington Doors Limited | Heywood | 1998 |
| Carrington Performance Fabrics Limited | Rochdale | 2000 |
| Carringtons Accountants Limited | West Yorkshire | 2004 |
| Carringtons Outdoor Hire Limited | Colchester | 2020 |
| Carringtons Properties Limited | Cambridge | 2021 |
| Carringtons Secretarial Services Limited | Hoddesdon | 2009 |
| Carrol MAY Glenford Coleman Limited | Manchester | 2024 |
| Carron Property Ltd | Glasgow | 2001 |
| Carrots & Sticks Limited | London | 2013 |
| Carrowdoon Landscape Management Limited | Co Antrim | 2002 |
| Carrwood Funeral Supplies Limited | Sutton Coldfield | 1994 |
| Carryduff Fuels Limited | | 2005 |
| Carryfair Limited | Droitwich | 1997 |
| Carrying a Dream Ltd | Windsor | 2021 |
| Cars 4 People Ltd | Manchester | 2014 |
| Cars by Appointment Limited | Norwich | 2008 |
| Cars of Fareham Limited | Fareham | 2014 |
| Cars on Film Ltd | Wells | 2021 |
| Cars Trustee (UK) NO 2 Limited | Gallows Hill | 1942 |
| Cars UN Limited | Swansea | 2023 |
| Cars Under 2K Limited | London | 2017 |
| CARS2GOOD2TRADE Limited | Knaresborough | 2014 |
| Carsan Limited | London | 2008 |