| Company | Timeline | Status | |
| Format Extend Limited Director • Director | 2 Aug 2012←13 Years→Current | Active | |
| R O H Architecture Limited Director • Architect | 26 Jul 2010←15 Years→Current | Active | |
| Gordon R Kerr & Associates Limited Director • Chartered Architect | 25 Nov 1991←31 Years→7 Feb 2023 | Dissolved | |
