| Company | Timeline | Status | |
| Project 29:7 Racing Ltd Director • Director | 11 Jul 2025←3 Months→Current | Active | |
| Stack Assets Ltd Director • Company Director | 2 Feb 2021←2 Years 2 Months→11 Apr 2023 | Dissolved | |
| Stack Property Holdings Ltd Director • Commercial Director | 18 Sep 2019←2 Years 7 Months→19 Apr 2022 | Dissolved | |
| Stack Contracts Limited Director • Director | 12 Mar 2019←2 Years 3 Months→15 Jun 2021 | Dissolved | |
| Miller Motorsport Ltd Director • Company Director | 26 Jun 2018←7 Years→Current | Active | |
| Stack Projects Limited Director • Director | 16 Oct 2017←8 Years→Current | Active | |
| Stack London Limited Director • Civil Engineer | 3 Sep 2013←12 Years→Current | Active | |
| Osborne Co-Operative Academy Trust Director • Construction Director | 1 Jun 2013←4 Years→16 Jul 2017 | Active | |
Miller Ellis Limited Director • Civil Engineer | 13 May 2013←4 Years→24 Oct 2017 | Dissolved | |
