| Company | Timeline | Status | |
| Ma Music, Leisure & Travel Ltd Director • Editorial Director | 1 Apr 2013←2 Years 2 Months→2 Jun 2015 | Active | |
| Ma Education & Music Limited Director • Editorial Director | 15 Jun 2005←18 Years→15 Mar 2024 | Active | |
| 46 Underhill Road Management Company Limited Director • Publishing | 19 Apr 2004←2 Years 11 Months→23 Mar 2007 | Active | |
| Ma Healthcare Limited Director • Editorial Director | 22 Nov 2000←23 Years→15 Mar 2024 | Active | |
