| Company | Timeline | Status | |
| Simpson Creative Limited Director • Interior Designer | 26 Sep 2000←25 Years→Current | Active | |
| Simpson Creative Limited Secretary • Interior Designer | 26 Sep 2000←25 Years→Current | Active | |
| Lancino Limited Secretary • Retired Designer | 9 Dec 1996←28 Years→Current | Active | |
| Lancino Limited Director • Retired Designer | 9 Dec 1996←26 Years→12 Oct 2023 | Active | |
