| Company | Timeline | Status | |
| Alan Knight Design Limited Director • Director | 1 Jan 2019←5 Years→7 May 2024 | Dissolved | |
| David Barnett Associates Limited Secretary • Design Director | 1 Jun 2001←17 Years→30 Nov 2018 | Active | |
| David Barnett Associates Limited Director • Design Director | 6 Apr 1994←24 Years→30 Nov 2018 | Active | |
