| Company | Timeline | Status | |
| Rhi Industrials Limited Director • Engineer  | 6 Feb 2002←21 Years→2 May 2023  | Active  | |
| R.H. Irving Construction Limited Director • Civil Eng  | 11 Aug 1997←28 Years→Current  | Active  | |
| Claremont Properties (Newcastle) Limited Director • Civil Engineer  | 31 Dec 1992←24 Years→22 Nov 2017  | Active  | |
