| Company | Timeline | Status | |
| The William Road Management Company Limited Director • Company Director | 1 Jul 2011←5 Years→19 Dec 2016 | Active | |
| Stephen Powell Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| Powell International Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
