| Company | Timeline | Status | |
| Winthrop Andrews Limited Secretary • Unreported | 31 May 1991←3 Years→10 May 1995 | Liquidation | |
| Winthrop Laboratories Limited Secretary • Unreported | 19 Mar 1991←34 Years→Current | Active | |
| Winthrop Laboratories Limited Secretary • Unreported | 1 Jan 1970←55 Years→Current | Active | |
