| Company | Timeline | Status | |
| Simon Miller Interiors Ltd Director • Director | 11 Mar 2014←9 Years→10 Oct 2023 | Dissolved | |
| Frances Gertler Limited Director • Director | 20 Jun 2011←14 Years→Current | Active | |
| Simon Miller Architects Ltd Director • Director | 14 Mar 2005←18 Years→10 Oct 2023 | Active | |
