| Company | Timeline | Status | |
| Donald Insall Associates (Trustees) Ltd Director • Architect | 1 Jan 2022←1 Year 12 Months→31 Dec 2023 | Active | |
| Society Of Architectural Historians Of Great Britain(The) Director • Architect | 1 Dec 2021←3 Years→Current | Active | |
| Donald Insall Associates Limited Director • Architect | 4 Feb 2014←9 Years→31 Jul 2023 | Active | |
