| Company | Timeline | Status | |
| Rongeur Limited Director • Architect | 15 Feb 2013←12 Years→Current | Active | |
| Aabc Register Limited Director • Architect | 13 Mar 2006←3 Years→26 Nov 2009 | Active | |
| Peter Holden Architects Limited Director • Architect | 27 Mar 1995←30 Years→Current | Active | |
| Acanthus Associated Architectural Practices Limited Director • Architect | 31 Dec 1990←15 Years→30 Apr 2006 | Active | |
