| Company | Timeline | Status | |
| Mikekostyn Limited Director • Financial Consultant | 6 Aug 2024←1 Year 3 Months→Current | Active | |
| Mikekostynconsultancy Limited Director • Consultant | 10 Mar 2023←9 Months→5 Dec 2023 | Dissolved | |
| Mike Kostyn Consulting Limited Director • Director | 2 Mar 2016←7 Years→25 Apr 2023 | Dissolved | |
| Place Productions Limited Director • Finance Director | 22 Jul 2015←7 Months→2 Mar 2016 | Dissolved | |
