| CLARKS CYCLE SYSTEMS HK LIMITED | Private company limited by shares | Live |
| CLARKSBURG LIMITED | Private company limited by shares | Dissolved |
| CLARKSON COMPANY LIMITED | Private company limited by shares | Dissolved |
| Clarkson SL (Asia) Limited | Private company limited by shares | Dissolved |
| Clarkson Consultancy Limited | Private company limited by shares | Live |
| CLARKSON GORDON LIMITED | Private company limited by shares | Dissolved |
| CLARKSON SHIPMANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| CLARKSTON INVESTMENTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CLARKSVILLE LIMITED | Private company limited by shares | Dissolved |
| CLARKSVILLE LIMITED | Private company limited by shares | Live |