| Company | Timeline | Status | |
| Margaret L Johnson Holdings Limited Director • Consultant | 16 Jul 2018←7 Years→Current | Active | |
| Margaret L Johnson Marlborough Limited Director • Consultant | 6 Jul 2018←7 Years→Current | Active | |
| SJC Properties Limited Director • Consultant | 23 Jul 2002←23 Years→Current | Active | |
| Margaret L.Johnson Limited Director • Consultant | 13 Dec 1991←34 Years→Current | Active | |
