| Company | Timeline | Status | |
| Greymatter204 Limited Director • Designer | 1 May 2023←1 Year 7 Months→26 Nov 2024 | Dissolved | |
| D & A Design Contracts Limited Director • Designer | 20 Dec 1991←34 Years→Current | Active | |
| D & A Design Contracts Limited Director • Unreported | 1 Jan 1970←55 Years→1 Nov 2025 | Active | |
