| Company | Timeline | Status | |
| Ward Lock Educational Company Limited Director • Company Director | 8 Apr 1991←34 Years→14 Oct 2025 | Dissolved | |
Ling Kee (U.K.) Limited Director • Company Director | 8 Apr 1991←4 Months→8 Aug 1991 | Dissolved | |
B.L.A. Publishing Limited Director • Company Director | 8 Apr 1991←4 Years→1 Aug 1995 | Dissolved | |
