| CNG Holdings Limited | Swansea | 2022 |
| CNG Retail Holdco Limited | Harrogate | 2019 |
| Cngibson Parent Holdings Ltd | London | 2017 |
| CNH Industrial Capital Europe Limited | Basildon | 1997 |
| CNH Industrial UK Limited | Basildon | 2017 |
| CNH Trustee Limited | Essex | 1994 |
| Cniw Dwallet Ltd | Stockton-On-Tees | 2019 |
| Cniw Securities Ltd | Stockton-On-Tees | 2022 |
| Cniw Wealth Management Limited | Stockton-On-Tees | 2024 |
| CNJ Insulations (Holdings) Limited | Leicester | 2022 |
| CNK Consulting Ltd | Norwich | 2018 |
| CNK Finance Limited | Nottingham | 2018 |
| CNL Consulting Ltd | Buckhurst Hill | 2021 |
| CNL Holdco Ltd | London | 2024 |
| CNL Holdings Limited | St Albans | 2017 |
| CNM Estates (Group) Limited | New Malden | 2022 |
| CNM Investent Holdings Limited | Loanhead | 2026 |
| Cnmb Ltd | Trowbridge | 2020 |
| Cnme Limited | Rugby | 2017 |
| CNO Partners Limited | Canary Wharf | 2023 |
| CNP Media Limited | Pulford | 2014 |
| Cnpl MEP Limited | West Malling | 2021 |
| CNR Holdings Ltd | Horsham | 2024 |
| CNR Ventures Limited | Bolton | 2018 |
| CNS Debt Capital Limited | London | 2019 |
| CNS Financial Solutions Limited | Arbroath | 2020 |
| CNS Group Limited | Shilton, Burford | 2020 |
| CNS Media EOT Limited | Chesterfield | 2021 |
| CNS Media Holdings Limited | Chesterfield | 2019 |
| CNS Solutions Limited | London | 2017 |
| Cnug Ltd | Dungannon | 2025 |
| CNV Holdings Ltd | Sheffield | 2025 |
| CNW Capital Service Ltd | London | 2013 |
| Cnwl Holdings Limited | London | 2017 |
| Cnwy Limited | London | 2025 |
| Co & Co Management Limited | London | 2026 |
| Co Holdco Limited | London | 2026 |
| Co Mersey Holdco Limited | Oxford | 2025 |
| Co Protect Limited | Hertford | 2017 |
| Co Tops Holdings Limited | Dunstable | 2022 |
| Co Ventures Ltd | London | 2026 |
| Co-Foundations Investments Ltd | London | 2019 |
| Co-Fx Technology Limited | Cardiff | 2020 |
| Co-Incidence Ventures Holdings Limited | Hertford | 2024 |
| Co-Investment Partners Ltd. | London | 2016 |
| Co-Lend Holdings Ltd | Tonbridge | 2019 |
| Co-Lend Ltd | Tonbridge | 2019 |
| Co-Living South Holdings Ltd | Portsmouth | 2024 |
| Co-Operative Independent Financial Solutions Ltd | Derby | 2012 |
| Co-Operative Wealth Management Ltd | Derby | 2012 |
| Co-Ordsport International Limited | Tipton | 2009 |
| Co-Pilot Commodities Limited | London | 2004 |
| Co-Wheels UK Limited | Newcastle Upon Tyne | 2018 |
| CO2 Europe Limited | London | 2018 |
| COA Limited | Huddersfield | 2016 |
| Coach Caterers Limited | Salisbury | 2018 |
| Coach Close Holdings Ltd | Rainworth, Mansfield | 2021 |
| Coach Glass Holdings Limited | Llanelli | 2018 |
| Coach House Investment Managers Limited | Winchester | 2013 |
| Coach House Litigation (NO 3) GP Limited | Winchester | 2017 |
| Coach House Litigation GP Limited | Winchester | 2017 |
| Coach House Rural Enterprises Limited | Derby | 2025 |
| Coach House Services Limited | Winchester | 2017 |
| Coach House Settlement (NO 3) GP Limited | Winchester | 2017 |
| Coach House Settlement (NO 4) GP Limited | Winchester | 2020 |
| Coach House Settlement (NO 5) GP Limited | Winchester | 2020 |
| Coach House Wealth Solutions Limited | Birmingham | 2003 |
| Coach Rentals Limited | Stratford-Upon-Avon | 2003 |
| COACHHIRE4U Limited | Luton | 2024 |
| Coachhouse Healing Holdings Limited | Huddersfield | 2019 |
| Coachhub Ltd | Uxbridge | 2022 |
| Coachlease Limited | Brentwood | 1997 |
| Coachman Group Limited | Hull | 2016 |
| Coachman Holdings Limited | Hull | 2001 |
| Coachsense Group Limited | Hemel Hempstead | 2025 |
| Coaker Holdings Ltd | Stockton On Tees | 2024 |
| Coakley Goodwin Group Ltd | Chesterfield | 2026 |
| Coal Heritage Pension Trustees Limited | Mexborough | 2025 |
| Coal Pension Trustees Investment Limited | Sheffield | 2010 |
| Coal Pension Trustees Services Limited | Sheffield | 1994 |
| Coal Staff Superannuation Scheme Trustees Limited | Sheffield | 1994 |
| Coal Steel Construction Limited | London | 2015 |
| Coalas Tech Limited | Kington | 2025 |
| Coalbrook Holdings Limited | Market Drayton | 2018 |
| Coalbrook Investments Limited | Lower Dicker | 2023 |
| Coalesce Group Limited | Ashford | 2022 |
| Coalescence Facilities Ltd | Bolton | 2024 |
| Coalescence Trading Limited | Mildenhall | 2021 |
| Coalface UK Limited | London | 2015 |
| Coalition Land Ltd | London | 2016 |
| Coalshed Investments Ltd | Newcastle Upon Tyne | 2018 |
| Coaltech Limited | London | 2018 |
| Coalter Co Limited | Enniskillen | 2026 |
| Coalville Holdings Ltd | Northampton | 2018 |
| Coam Members Limited | London | 2018 |
| Coast & Capital Mortgages Limited | Croydon | 2016 |
| Coast & Country Mortgages Limited | Waterlooville | 2026 |
| Coast & Country Wealth Management Limited | Abergavenny | 2015 |
| Coast 2 Coast Holdings Ltd | Bridgend | 2022 |
| Coast and Country Hospitality Group Limited | Ipswich | 2025 |