| Carsana Group Holdings Ltd | Eastbourne | 2026 |
| Carsave Leasing Ltd | Sheffield | 1996 |
| Carse Group Ltd | Wisbech | 2017 |
| Carsena Investments Ltd | Belfast | 2019 |
| Carseview Properties Ltd | Forres | 2012 |
| Carson & Hughes Ltd | Basingstoke | 2018 |
| Carson Capital Ltd | Westcliff-On-Sea | 2020 |
| Carson Financial Solutions Ltd | Glasgow | 2016 |
| Carson Moore Limited | Loughborough | 2016 |
| Carson Powell Holdings Limited | Stoke-On-Trent | 2019 |
| Carson Ventures Ltd | Chatteris | 2024 |
| Carsonkaye Holdings Ltd | London | 2019 |
| Carsphairn Renewable Energy Fund Limited | Castle Douglas | 2009 |
| Carss Financial Partners Ltd | Newcastle Upon Tyne | 2017 |
| Carstar Finance Limited | London | 1998 |
| Carstramon Holdings Co Ltd | Kirkcudbright | 2025 |
| Carsue Limited | Bedford | 2017 |
| Carswell Opstech Ltd | London | 2024 |
| Carta Europe Administrator Limited | St. Albans | 2023 |
| Carta Financial Services Limited | London | 2007 |
| Carta Law Holdings Limited | St. Albans | 2025 |
| Carta Risk Limited | Newark | 2025 |
| Cartan Trade UK Limited | London | 2023 |
| Cartco Consulting Ltd | Preston | 2024 |
| Carte Blanche Family Office Limited | Milton Keynes | 2014 |
| Carte Postale Holdings Limited | London | 2019 |
| Carte Postale Investment Limited | London | 2019 |
| Cartel Direct Holdings Limited | Colnbrook | 2017 |
| Cartel Group Limited | Newcastle Upon Tyne | 2019 |
| Cartena Holdings Ltd | Consett | 2026 |
| Carter Hythe Limited | Hertford | 2019 |
| Carter & Carter Financial Limited | Lytham St. Annes | 2005 |
| Carter & Co Property Consultants Limited | Swaffham | 2020 |
| Carter & Robson Limited | Exeter | 2024 |
| Carter Atelier Ltd | London | 2026 |
| Carter Bidco Ltd | Leeds | 2025 |
| Carter Black Ltd | Barwell | 2016 |
| Carter Brothers Holdings Ltd | Wigan | 2021 |
| Carter Ceba Limited | Rochdale | 2013 |
| Carter Co Cornwall Ltd | Truro | 2021 |
| Carter Collins Group Ltd | Aylesbury | 2020 |
| Carter Dawes IFA Solutions Ltd | Honiton | 2002 |
| Carter Debtco II Ltd | Leeds | 2025 |
| Carter Debtco Ltd | Leeds | 2025 |
| Carter Environmental Holdings Ltd | Chippenham | 2013 |
| Carter Family Holdings Limited | Washington | 2019 |
| Carter Financial Consultancy Limited | Liverpool | 2014 |
| Carter Financial Ltd | London | 2018 |
| Carter Financial Solutions Ltd | Leeds | 2023 |
| Carter Ford Limited | Coventry | 2017 |
| Carter GP Limited | London | 2023 |
| Carter Green Ltd | Shipley | 2015 |
| Carter Group (CTR) Ltd | Bootle | 2024 |
| Carter Group N.E Ltd | Newton Aycliffe | 2026 |
| Carter Holdings (Peterborough) Ltd | Woodston | 2022 |
| Carter Holdings Limited | Derby | 2017 |
| Carter Inc Ltd | Camberley | 2025 |
| Carter Investment Holdings Limited | London | 2023 |
| Carter Investment Holdings Two Limited | London | 2025 |
| Carter Investment Midco Limited | London | 2025 |
| Carter Investment Topco Limited | London | 2025 |
| Carter Invests Ltd | Chandlers Ford | 2024 |
| Carter Jonas Acquisitions Ltd | London | 2013 |
| Carter Jonas Enterprises Limited | London | 2014 |
| Carter Lauren (Property) Limited | Cardiff | 2012 |
| Carter LEE Financial Services Limited | Neath | 2014 |
| Carter Legrand Wealth Strategies Limited | Arnold | 2015 |
| Carter Marketing Limited | London | 2019 |
| Carter MAY Investments Limited | Stockport | 2022 |
| Carter Moore Financial Advice and Wealth Management Ltd | Royal Wootton Bassett | 2013 |
| Carter Pearl Limited | Suffolk | 1986 |
| Carter Reynolds Holdings Ltd | Leeds | 2024 |
| Carter Rice Ltd | King'S Lynn | 2024 |
| Carter Robinson Limited | Taunton | 2017 |
| Carter Sable Limited | Wickford | 2026 |
| Carter Smith Property Finance Ltd | Lee-On-The-Solent | 2025 |
| Carter Steel Holdings Limited | Stockton-On-Tees | 2024 |
| Carter Thompson & Associates Limited | Darlington | 2014 |
| Carter Towler Holdings Limited | Leeds | 2020 |
| Carter Unique Pods Ltd | Blackpool | 2025 |
| Carter Wealth Management Ltd | Leeds | 2012 |
| Carter West Holdings Ltd | Walsall | 2022 |
| Carter-Middleton Holdings Limited | Beckenham | 2024 |
| Carter-Middleton Limited | Beckenham | 1995 |
| Carterfinch Ltd | Mildenhall | 2025 |
| Cartergate BED Centre Holdings Limited | Newark | 2015 |
| Carterhold Ltd | Sidcup | 2024 |
| Cartermortgageandprotection Ltd | Stoke-On-Trent | 2024 |
| Carterprop Ltd | Cheltenham | 2025 |
| Carters (UK) Ltd | Harrow On The Hill | 2013 |
| Carters Family Holdings Limited | Torquay | 2025 |
| Carters Holdings Ltd | Burton-On-Trent | 2020 |
| Carters Packaging (Cornwall) Ltd | Truro | 2020 |
| Cartes Estate Planning T/A Ewyllysda / Goodwill Limited | Dyffryn Ardudwy | 2020 |
| Cartesian Wealth Limited | Warwick | 2021 |
| Carthage Bidco UK Ltd | London | 2020 |
| Carthage Buyer Ltd | London | 2024 |
| Carthage Holdco UK Ltd | London | 2020 |
| Carthage Topco Ltd | London | 2024 |
| Carthago Ltd | Ilford | 2016 |