| Company | Timeline | Status | |
| Drumglass Investments Limited Director • Building Services Engineer | 17 Jun 1999←6 Years→6 Jul 2005 | Active | |
| Building Design Partnership Limited Director • Building Services Engineer | 30 Jun 1997←3 Years→30 Jun 2000 | Active | |
| BDP Planning Supervisors Limited Director • Building Services Engineer | 3 Jun 1996←4 Years→30 Jun 2000 | Active | |
| BDP Lighting Limited Director • Building Services Engineer | 10 Apr 1995←4 Years→1 Nov 1999 | Active | |
| BDP Europe Limited Director • Chartered Engineer | 21 Dec 1991←7 Years→1 Nov 1999 | Active | |
| BDP Acoustics Limited Director • Building Services Engineer | 21 Dec 1991←7 Years→1 Nov 1999 | Active | |
| BDP Engineering Limited Director • Building Services Engineer | 21 Dec 1990←9 Years→30 Jun 2000 | Active | |
