| Company | Timeline | Status | |
| RSK Carter Ecological Ltd Director • Director | 5 Mar 2007←9 Years→3 Apr 2016 | Dissolved | |
| RSK Carters Ecological Ltd Director • Director | 23 Feb 2007←9 Years→3 Apr 2016 | Dissolved | |
| RSK Environment Limited Director • Principal Landscape Architect | 1 Jul 1998←27 Years→Current | Active | |
