| Company | Timeline | Status | |
| Haring Woods Studio Director • Librarian | 28 Nov 2003←4 Months→13 Apr 2004 | Dissolved | |
| The Landscape And ARTS Network Limited Director • Librarian | 16 Nov 1998←5 Years→13 Apr 2004 | Dissolved | |
| Landscape Design Trust Director • Librarian | 26 Jul 1994←24 Years→18 Dec 2018 | Dissolved | |
