| Company | Timeline | Status | |
| Freddie Brown Associates Limited Director • Engineer | 1 Jul 2010←15 Years→Current | Active | |
| Fergusons Ltd Director • Consulting Engineer | 18 Dec 2006←4 Years→20 May 2011 | Active | |
| Ferguson Brown Sustainability Ltd Director • Engineer | 24 Apr 2006←5 Years→20 May 2011 | Active | |
