| Company | Timeline | Status | |
| Project 94 Ltd Director • Director | 1 Sep 2022←3 Years→Current | Active | |
| Graphene Payment Solutions Limited Director • Director | 11 Sep 2020←2 Years→27 Sep 2022 | Dissolved | |
| Project 94 Ltd Director • Director | 4 May 2020←2 Years 4 Months→1 Sep 2022 | Active | |
| RK Infrastructure Limited Director • Director | 8 Nov 2019←6 Years→Current | Active | |
| Asaw Group Ltd Director • Director | 21 May 2019←6 Years→Current | Active | |
| Graphene Recruitment Group Ltd Director • Director | 6 Mar 2019←6 Years→Current | Active | |
Grant Walker Infrastructure Limited Director • Director | 11 Jul 2016←2 Years 5 Months→18 Dec 2018 | Dissolved | |
| Grant Walker Group Ltd Director • Director | 12 Mar 2015←10 Years→Current | Active | |
| Grant Walker Engineering Ltd Director • Director | 20 Jan 2013←12 Years→Current | Active | |
