| Company | Timeline | Status | |
| Roger Oliver Consulting Engineers Ltd Director • Company Director | 10 Sep 2020←5 Years→Current | Active | |
| The Oliver Partnership Limited Director • Structural Engineer | 7 Dec 2000←20 Years→1 Jun 2021 | Dissolved | |
| Associated Structural Design Limited Director • Structural Engineer | 1 Apr 1994←27 Years→1 Jun 2021 | Dissolved | |
| Associated Structural Design Limited Secretary • Structural Engineer | 1 Apr 1994←24 Years→1 May 2018 | Dissolved | |
