| Company | Timeline | Status | |
| The Grey Lady Limited Director • Director | 7 Jan 2022←8 Months→27 Sep 2022 | Dissolved | |
| Family Time Limited Director • Director | 1 Oct 2016←6 Years→15 Aug 2023 | Dissolved | |
| Isochem Limited Director • Unreported | 4 Nov 2011←14 Years→Current | Liquidation | |
| CK Isotopes Limited Director • Unreported | 4 Nov 2011←14 Years→Current | Active | |
| Buse Scientific Ltd Director • Director | 7 Oct 2011←4 Years→31 Aug 2016 | Active | |
| C K Gas Products Limited Director • Unreported | 12 Sep 2011←14 Years→Current | Active | |
