| Company | Timeline | Status | |
| J Witkowski Ltd Director • Chartered Electrical Engineer | 6 Nov 2023←2 Years 1 Month→Current | Active | |
| Clean Squad Ltd Director • Chartered Electrical Engineer | 23 Aug 2021←1 Year 12 Months→22 Aug 2023 | Dissolved | |
| Electrus Ltd Director • Chartered Electrical Engineer | 23 Mar 2018←7 Years→Current | Active | |
| CNC Tooling Solutions Ltd Director • Chartered Electrical Engineer | 18 Mar 2018←4 Months→22 Jul 2018 | Dissolved | |
