| Carl Naylor Fitness Ltd | Liverpool | 2021 |
| Carl NO 2 Limited | Bristol | 2024 |
| Carl Saville Design Ltd | Ayr | 2017 |
| Carl Shillcock Limited | Chelmsford | 2008 |
| Carl Williams Entertainments Ltd | Pembroke Dock | 2021 |
| Carl's Burger's Ltd | Harlow | 2017 |
| Carla Brooks Limited | Basildon | 2022 |
| Carla Donato Ltd | London | 2017 |
| Carla James Aesthetics Ltd | Weston Super Mare | 2023 |
| Carla Lawrence Ltd | Peterhead | 2017 |
| Carla Lawson Makeup Ltd | Liverpool | 2020 |
| Carlana Enterprises Ltd | Birmingham | 2022 |
| Carlannemeraki Limited | Aberdeen | 2018 |
| Carlcroft Midlands Limited | Stafford | 2014 |
| Carlene Noel Limited | Billericay | 2015 |
| Carleton Canine Centre Limited | Arundel | 2005 |
| Carleton Grange Trust | Pontefract | 2004 |
| Carleton Medical Limited | Chesham | 2008 |
| Carley Hill Hair Ltd | Woodbridge | 2026 |
| Carley Murphy Colour Doctor Ltd | Liverpool | 2019 |
| Carley Richards Limited | St Leonards On Sea | 2017 |
| Carlie Barlow Health & Wellbeing Ltd | Shrewsbury | 2019 |
| Carlin Associates Ltd | Paisley | 2012 |
| Carlin Contract Services (Argyll) Limited | Oban | 2022 |
| Carlin Haircare Ltd | Belfast | 2011 |
| Carlin Meek Electrical Ltd | Motherwell | 2016 |
| Carline&Co Ltd | Ellesmere Port | 2026 |
| Carling Computers Ltd | Welling | 2018 |
| Carlink Solutions Ltd | London | 2024 |
| Carlisle and District Model Engineering Society | Carlisle | 1996 |
| Carlisle Conservative Club Limited(The) | Cumbria | 1947 |
| Carlisle Diocesan Board of Finance Limited | Penrith | 1893 |
| Carlisle Eden Mind Limited | Carlisle | 2006 |
| Carlisle Fadecut Ltd | Carlisle | 2023 |
| Carlisle Hair Loss Clinic Ltd | Carlisle | 2021 |
| Carlisle Nails & Spa Ltd | London | 2019 |
| Carlisle NUMBER1 Fade Ltd | Carlisle | 2023 |
| Carlisle One World Centre | Carlisle | 2001 |
| Carlisle Style Ltd | Carlisle | 2021 |
| Carlnavas Limited | Balmedie | 2009 |
| Carlo Breen Limited | Preston | 2025 |
| Carlo's Barber Shop Limited | Addlestone | 2008 |
| Carlo's Barbers Limited | Stevenage | 2012 |
| Carlos & Europe Security Ltd | Northampton | 2018 |
| Carlos Art Ltd | London | 2024 |
| Carlos Cuts Ltd | Dewsbury | 2025 |
| Carlos Fernandez Limited | Eastbourne | 2012 |
| Carlos Gardener Ltd | Watford | 2023 |
| Carlow/Aesthetics Ltd | Thame | 2023 |
| Carltech Design and Build Ltd | Ilford | 2022 |
| Carltech Ltd | Ilford | 2010 |
| Carlton & Jane Limited | Whaplode | 2016 |
| Carlton Blyth Limited | Westerham | 2024 |
| Carlton Boarding Kennels Limited | Leeds | 2016 |
| Carlton Caravan Storage Ltd | Carlton | 2014 |
| Carlton Cleaners (UK) Ltd | Bolton | 2014 |
| Carlton Clothing Repairs Ltd | Nottingham | 2023 |
| Carlton Court Freehold Limited | London | 2005 |
| Carlton Distribution (UK) Limited | Cambridgshire | 1994 |
| Carlton Drycleaner Limited | London | 2017 |
| Carlton Funeral Service Ltd | Carlton | 2014 |
| Carlton Group Limited | Hayes | 2009 |
| Carlton House Holdings Limited | Epping | 2019 |
| Carlton Nails & Spa 182 Ltd | Nottingham | 2023 |
| Carlton Noble Limited | London | 2018 |
| Carlton Professional International Limited | Cheltenham | 2020 |
| Carlton Self Store Ltd | Carlton | 2014 |
| Carlton Street Works Ltd | London | 2023 |
| Carlton Tuning Limited | Barnsley | 2021 |
| Carlton Turin Group Limited | London | 2016 |
| Carlton Tyres (Rainham) Limited | Essex | 2002 |
| Carlton Wheway Jewellery Repairs Limited | Birmingham | 2003 |
| Carluke Gents Barbers Ltd | Lanark | 2018 |
| Carluke Hair Ltd | Lanark | 2024 |
| Carluke Nails & Spa Ltd | London | 2022 |
| Carluke Turkish Barber Ltd | Carluke | 2023 |
| Carluke Wash Ltd | Carluke | 2019 |
| Carly & Co Hairdressing Limited | Morecambe | 2019 |
| Carly FEE Funerals Ltd | Newcastle Upon Tyne | 2023 |
| Carly Ferguson Consulting Ltd | Alton | 2017 |
| Carly Lawson Beauty Therapy Limited | Stourport On Severn | 2024 |
| Carly Mcdonald Beauty Ltd | Paisley | 2025 |
| Carly Parker Electrolysis Ltd | Stroud | 2025 |
| Carly Salter Interiors Ltd | Rayleigh | 2017 |
| Carly Smith PMU Artistry Ltd | Chesterfield | 2022 |
| Carly Winer Events Ltd | Colchester | 2020 |
| Carly's Crafty Creations Ltd | Newport | 2023 |
| Carly's Cutiecles Limited | Croydon | 2021 |
| Carly's Ltd | Irvine | 2025 |
| Carlyle Square Garden Limited | London | 1963 |
| Carlyle Taxis Ltd. | Musselburgh | 2024 |
| Carlyon Artificial Intelligence Group Limited | London | 2017 |
| Carlyon Ventures Ltd | Worthing | 2016 |
| Carly’S Beauty Limited | Gillingham | 2025 |
| Carly’S Pet Care Ltd | Flint | 2019 |
| Carma Hair Limited | Claydon | 2013 |
| Carma Services Limited | Edgware | 2017 |
| Carmak Limited | Cardiff | 2019 |
| Carman’S Canines Services Ltd | London | 2025 |
| Carmarthen Funeral Director Limited | Carmarthen | 2008 |