| Company | Timeline | Status | |
| Dulwich Developments Limited Director • Architect | 25 Mar 2020←5 Years→Current | Active | |
| Protean Estates Limited Director • Architect | 3 Nov 2015←4 Years→5 Dec 2019 | Active | |
| Protean Developments Limited Director • Unreported | 3 Feb 2011←14 Years→Current | Active | |
| Ambrose McCallum Architects Limited Director • Architect | 4 Mar 2008←17 Years→Current | Active | |
