| Company | Timeline | Status | |
| Michael Collins Architects (Hertfordshire) Limited Director • Architect | 30 Apr 2025←6 Months→Current | Active | |
| Letchworth Garden City Trading Limited Director • Company Director | 11 Apr 2022←3 Years→Current | Active | |
| Collins + Bell Architects LLP Designated LLP Member • Unreported | 23 Jan 2018←6 Years→9 Jul 2024 | Dissolved | |
| Michael Collins Architect LLP Designated LLP Member • Unreported | 2 Oct 2017←8 Years→Current | Active | |
| Anna Collins Projects LLP Designated LLP Member • Unreported | 28 Feb 2017←8 Years→Current | Active | |
