| Company | Timeline | Status | |
| Kieran Mullin Limited Director • Teacher | 14 Mar 2008←17 Years→Current | Active | |
| KM Devs Derby Limited Director • Teacher | 14 Mar 2008←17 Years→Current | Liquidation | |
| K M Training Limited Director • Unreported | 8 Jan 2002←24 Years→9 Jan 2026 | Dissolved | |
| Em (Derby) Ltd Director • Unreported | 12 Oct 1999←26 Years→25 Dec 2025 | Dissolved | |
