| Company | Timeline | Status | |
Roughton (Holdings) Limited Director • Civil Engineer | 27 Jul 1995←10 Years→7 Jun 2006 | Dissolved | |
| Roughton International Limited Director • Consulting Engineer | 10 Aug 1991←14 Years→7 Jun 2006 | Active | |
| Roughton & Partners Limited Director • Consulting Engineer | 1 Jan 1970←25 Years→1 Oct 1995 | Active | |
