| Company | Timeline | Status | |
| St. Johns Terrace (Keswick) Management Company Limited Director • Architect | 23 Sep 2012←6 Years→30 Sep 2018 | Active | |
| JC Build Limited Director • Architect | 17 May 2011←14 Years→Current | Active | |
| Julian Cowie Architects Limited Director • Architect | 10 Nov 1997←28 Years→Current | Active | |
| Cowie Technology Group Limited Director • Company Director | 31 Dec 1990←24 Years→31 Dec 2014 | Active | |
