| Company | Timeline | Status | |
| Technical Alarm Systems Limited Director • Director | 5 Mar 1999←2 Years 6 Months→17 Sep 2001 | Active | |
| Kemp's Shipyard Limited Director • Director | 17 Oct 1992←33 Years→Current | Active | |
| Athey & Kemp (Engineers) Limited Director • Company Director | 1 Sep 1991←34 Years→Current | Active | |
| Kempsafe Limited Director • Director | 1 Sep 1991←22 Years→18 Feb 2014 | Dissolved | |
