| Company | Timeline | Status | |
| Circuit Development Limited Director • Software Engineer | 6 Feb 2020←2 Years 1 Month→22 Mar 2022 | Dissolved | |
| Erskine Software Ltd Director • Software Developer | 17 Apr 2017←3 Years→13 Apr 2021 | Active | |
Circuit I.T. Limited Director • It Consultant | 6 Aug 2001←13 Years→12 Sep 2014 | Dissolved | |
