| Company | Timeline | Status | |
| Horwitz Associates Limited Director • Director | 14 Dec 2016←8 Years→Current | Active | |
| 135/137 NLR Management Ltd Director • Chartered Structural Engineer Company Di | 22 Oct 2013←12 Years→Current | Active | |
Horjian Consulting Ltd Director • Chartered Struct Engineer | 24 Aug 2011←5 Years→31 Jan 2017 | Dissolved | |
| R.H. Structures Limited Director • Chartered Structural Engineer | 10 Oct 1996←27 Years→13 Feb 2024 | Dissolved | |
