| Company | Timeline | Status | |
| DWH Canterbury Limited Director • Director | 15 Dec 2014←2 Years 2 Months→25 Feb 2017 | Dissolved | |
Douglas-Westwood (Holdings) Limited Director • Company Director | 15 Mar 2004←15 Years→28 Apr 2019 | Dissolved | |
| Douglas-Westwood Limited Director • Company Director | 24 Oct 1991←23 Years→17 Apr 2015 | Active | |
