| Cargpt Holdings Limited | London | 2026 |
| Carholme Dental Group Limited | London | 2013 |
| Carholme Freeholds Limited | London | 2016 |
| Cariad Commercial Ltd | Reading | 2015 |
| Cariad Group Holdings Ltd | Porthmadog | 2023 |
| Cariad Investments Limited | Chester | 2019 |
| Cariad Mortgage Solutions Ltd | Swansea | 2023 |
| Carian Holdings Ltd | Fraserburgh | 2025 |
| Carib Planning Limited | London | 2018 |
| Caribalga Group Ltd | Dover | 2026 |
| Caribhub Ltd | London | 2019 |
| Caribi Investments Limited | Erith | 2016 |
| Caribou Bidco Limited | Sheffield | 2021 |
| Caribou Group Limited | Farnham | 2025 |
| Caribou Midco I Limited | Sheffield | 2021 |
| Caribou Midco II Limited | Sheffield | 2021 |
| Caribou One Limited | Eastbourne | 2023 |
| Caribsure Ltd | London | 2025 |
| Carice Holdings Ltd | Clevedon | 2024 |
| Caridian Limited | Rugby | 2021 |
| Caridon Holdings Newco Limited | London | 2024 |
| Caridon Trading Ventures Ltd | Croydon | 2018 |
| Caridwen Trustees Limited | London | 2023 |
| Carige Limited | Bradford | 2015 |
| Carililiseb Holdings Ltd | Aberdare | 2022 |
| Carina International Limited | Elstree | 1991 |
| Carina Renewable Limited | 1 Oxford Street | 2013 |
| Caring Hands (Care Services) EOT Limited | Sheffield | 2023 |
| Caring Holding Ltd | Sutton Coldfield | 2022 |
| Caring Holding One Limited | Manchester | 2018 |
| Caring Holding Three Limited | Manchester | 2022 |
| Caring Holding Topco Ltd | Manchester | 2022 |
| Caring Holding Two Limited | Manchester | 2018 |
| Caring Homes Healthcare (Ringmer) Limited | Colchester | 2018 |
| Caring Investments Limited | London | 2012 |
| Caring Kind Home Solutions Ltd | London | 2024 |
| CARING4OURCARERS CIC | Lyndhurst | 2023 |
| Carinsurent Ltd | London | 2016 |
| Cariole Limited | Heanor | 2014 |
| Cariri Partnerships Ltd | Abertawe | 2026 |
| Carisbrooke Holdings Limited | Basingstoke | 2016 |
| Carish Holding Corp. Ltd | London | 2022 |
| Caritabo Invest Ltd | London | 2020 |
| Caritas Holdings Limited | Pinner | 2022 |
| Carl C. Grant Financial Solutions Limited | Bromborough | 2015 |
| Carl D Weston Limited | Nottingham | 2022 |
| Carl Hague Limited | Preston | 2020 |
| Carl Helme Insurance Brokers Limited | Manchester | 2014 |
| Carl Higham Financial Planning Ltd | Colwyn Bay | 2016 |
| Carl Mccaffrey Management Services Limited | Waterlooville | 2012 |
| Carl Murphy Holdings Limited | Liverpool | 2009 |
| Carl O'Leary Limited | Bromsgrove | 2022 |
| Carl Saunders Holdings Ltd | Glasgow | 2024 |
| Carl Twigg Holdings Ltd | Belper | 2011 |
| Carl Williams Wealth Management Ltd | Formby | 2016 |
| Carl Wright Ltd | Mansfield | 2020 |
| Carla G Bidco Ltd | London | 2025 |
| Carla Holdings Limited | Liverpool | 2023 |
| Carla Weaffer Trading and Investments Ltd | London | 2024 |
| Carlatton Capital Limited | Birmingham | 2018 |
| Carlatton Holdings Limited | Birmingham | 2020 |
| Carlauren Lifestyle Resorts Limited | Town Quay | 2015 |
| Carlbom Group Limited(The) | Nr Louth | 1980 |
| Carlburne Apartments Ltd | London | 2025 |
| Carlburne Property 1 Ltd | London | 2020 |
| Carle & Co Ltd | London | 2004 |
| Carlease (UK) Ltd | Leigh | 2014 |
| Carleasing Midlands Ltd | Halesowen | 2002 |
| Carleton Chambers 2023 Limited | Portadown | 2012 |
| Carleton Nominees Ltd | Dorchester | 2025 |
| Carleton-Lightfoot Services Limited | East Sussex | 1991 |
| Carlex Estates,Limited | Leeds | 1946 |
| Carley Financial Limited | Bolton | 2016 |
| Carlic Ltd | London | 2024 |
| Carlile Alexander Private Wealth Limited | London | 2017 |
| Carlile Financial Ltd | Pontefract | 2016 |
| Carlile Financial Services Ltd | Belfast | 2014 |
| Carlin & Family Company Limited | Heanor | 2022 |
| Carlin Family Office Ltd | Stockton | 2024 |
| Carlin Group Ltd | Chesterfield | 2017 |
| Carling Nanson Company Limited | London | 2024 |
| Carlingford Vision Ltd | Newry | 2026 |
| Carlingnose Associates Limited | Hawick | 2007 |
| Carlingnose Holdings Limited | Blackburn | 2012 |
| Carliol Holdings Ltd | Washington | 2018 |
| Carlisa Holdings & Investments Ltd | Dudley | 2024 |
| Carlisle & Collins Limited | Peebles | 2002 |
| Carlisle (Mansfield) Limited | Nottingham | 2017 |
| Carlisle Assets Limited | Ilford | 2018 |
| Carlisle Bros. (Sandiacre) | Nottingham | 1963 |
| Carlisle Capital Partners Limited | London | 2007 |
| Carlisle Interconnect Technologies Holdings Ltd. | London | 2023 |
| Carlisle Investment UK Ltd | London | 2025 |
| Carlisle Refrigeration Group Holdings Limited | Altrincham | 2023 |
| Carlive Limited | Stanmore | 2025 |
| Carlo Bidco Limited | Kennington | 2021 |
| Carlo Oliveri Ltd | Weymouth | 2025 |
| Carlo Topco Limited | Kennington | 2021 |
| Carlogie Ltd | Carnoustie | 2018 |
| Carlon Investments Limited | Newton Aycliffe | 2025 |