| C K Services Group Limited | Whalley | 2018 |
| C K Y Family Investment Company Limited | Liverpool | 2025 |
| C Kidd Holdings Limited | Borehamwood | 2026 |
| C Knight & Co Limited | Loughborough | 2020 |
| C Konzen Merchants Capital UK Ltd | Warwick | 2024 |
| C L & H Developments Limited | South Yorkshire | 2005 |
| C L Bell Ltd | Coventry | 2024 |
| C L Digital Holdings Ltd | Newport | 2023 |
| C L Finance Limited | Leeds | 1973 |
| C L Financial Ltd | Verwood | 2020 |
| C L Investments Holdings Ltd | Stanmore | 2019 |
| C L Mortgages and Protection Limited | Fareham | 2019 |
| C L Salmon Holdings Limited | Brigg | 2020 |
| C L Standen Holdings Limited | Waterlooville | 2004 |
| C Lancaster Ltd | Oldham | 2026 |
| C Lartey Commercial Limited | Croydon | 2020 |
| C Lyons Consultancy Ltd | London | 2016 |
| C M B Ashton Limited | Derby | 2004 |
| C M Business Solutions Ltd | Colchester | 2024 |
| C M Corney Holdings Limited | Southampton | 2012 |
| C M Holdings (North East) Limited | Consett | 2026 |
| C M Johnston Consultancy Limited | Glasgow | 2015 |
| C M Loans Limited | Erdington | 2012 |
| C M Restaurants (Holdings) Limited | Cheltenham | 2014 |
| C M Ward Holdings Ltd | Nottingham | 2021 |
| C M Yardley Limited | Nottingham | 2014 |
| C M Young FIC Limited | South Shields | 2024 |
| C M Young Financial Services Limited | Stafford | 2013 |
| C M Young Holdings Limited | South Shields | 2024 |
| C MAR Investment Limited | London | 2016 |
| C Mazers Ltd. | Nottingham | 2014 |
| C Mcdonald Holdings Ltd | Baxenden | 2025 |
| C Mcintosh Limited | Wakefield | 2021 |
| C Media Holdings Ltd | London | 2023 |
| C Media Limited | Birmingham | 2010 |
| C Millar Farming Holdings Limited | Berwick Upon Tweed | 2023 |
| C Money Exchange Ltd | Borehamwood | 2024 |
| C N K Solutions Limited | Mansfield | 2003 |
| C N Overton Holdings Limited | Lincoln | 2012 |
| C N Poole Holdings Limited | Droitwich | 2018 |
| C N Poole Limited | Stourbridge | 2002 |
| C N R Contractors Limited | London | 2011 |
| C N Ross-Field Holdings Limited | London | 2012 |
| C Neeson Consulting Limited | Derry | 2017 |
| C Nicholas Limited | Stroud | 2020 |
| C Northfield Holdings Ltd | Sheffield | 2022 |
| C O'Brien Protection Ltd | Ware | 2022 |
| C P Accounting and Financial Services Limited | Warrington | 2013 |
| C P Door Company Limited | Dundee | 2024 |
| C P Griffiths IFA Ltd | Stourbridge | 2007 |
| C P Holdings (Nottingham) Ltd | Nottingham | 2020 |
| C P Medical International Ltd | Birmingham | 2021 |
| C P Rolland Ltd | Brighton | 2016 |
| C P Smith Holdings Limited | Swaffham | 2023 |
| C P Smith Investments Limited | Swaffham | 2023 |
| C P Southern (Holdings) Limited | Southend-On-Sea | 2011 |
| C P Wilkinson Financial Services Ltd | Norwich | 2012 |
| C Pack Group Holdings Ltd | Burnley | 2026 |
| C Plus Harlow Bidco Limited | London | 2022 |
| C Plus Logistics Mezzco Limited | London | 2022 |
| C Plus Logistics Midco Limited | London | 2022 |
| C Plus Logistics Topco Limited | London | 2022 |
| C Plus Student Accommodation Bristol Opco Limited | London | 2023 |
| C Plus Student Accommodation Bristol Propco Limited | London | 2023 |
| C Plus Student Accommodation Holdco Limited | London | 2023 |
| C Plus Topco Limited | London | 2022 |
| C Power Holdings Ltd | Waterlooville | 2025 |
| C Prince Financial Services Limited | Denby | 2006 |
| C Projekt 2 Limited | Chesterfield | 2025 |
| C Properties Ltd | London | 2018 |
| C Pugh Financial Services Limited | Shrewsbury | 2011 |
| C PYM Group Ltd | Nottingham | 2024 |
| C R Hughes Holdings Ltd | Leicester | 2020 |
| C R Pearce Limited | Cobham | 2013 |
| C R Sheldon Limited | Lincoln | 2025 |
| C R Simpson Ltd | Whitchurch | 2015 |
| C Richardson Capital Limited | Preston | 2022 |
| C Russell Holdings Limited | Horsforth | 2009 |
| C Ryan Hospitality Holdings Limited | Hatfield | 2023 |
| C S Bass Ltd | Weybridge | 2011 |
| C S Commodity Solutions (Group) Limited | Salisbury | 2018 |
| C S Concrete Holdings Limited | Lewes | 2023 |
| C S Dean Group Limited | Cardiff | 2021 |
| C S Finance Limited | London | 2014 |
| C S Financial Planning Limited | Northwich | 2009 |
| C S J Passant Ltd | Cardigan | 2025 |
| C S Johnson Consulting Ltd | London | 2007 |
| C S Ryder Holdings Limited | Plymouth | 2021 |
| C S Todd Limited | Stockport | 2023 |
| C S Travel and Money Transfer Limited | Birmingham | 2024 |
| C S Wealth Solutions Limited | Kendal | 2019 |
| C Savoy Stocks Trading Ltd | Ipswich | 2024 |
| C Stewart Holding Ltd | Glasgow | 2024 |
| C Stewart Properties Limited | By Kirknewton | 2025 |
| C T Glass Holdings Limited | Leeds | 2016 |
| C T O'Connor Holdings Limited | London | 2023 |
| C T P Holdings 2012 Limited | Letchworth Garden City | 2012 |
| C Thomas Contracting Ltd | Ross-On-Wye | 2023 |
| C Thornley Holdings Ltd | Suffolk | 2024 |
| C to C SME Finance Limited | Fleet | 2014 |