| Company | Timeline | Status | |
| Definition Systems Management Limited Director • Director | 28 Sep 2025←1 Month→Current | Active | |
| S Johnston Property Holdings Limited Director • Electrical Engineer | 17 Mar 2023←2 Years 7 Months→Current | Active | |
| Liquid Lantern Ltd Director • Managing Director | 12 Aug 2019←4 Years→1 Feb 2024 | Active | |
| SJP Services (Electrical) Limited Director • Managing Director | 30 Apr 2019←6 Years→Current | Active | |
| SJ Power Limited Director • Unreported | 28 Dec 2017←7 Years→Current | Active | |
