| Company | Timeline | Status | |
| Hardie Polymers Holdings Limited Director • Director | 25 Nov 2021←4 Years→Current | Active | |
| Hardie Polymers Limited Director • Director | 25 Nov 2021←4 Years→Current | Active | |
| J. & G. Hardie & Co. Limited Director • Director | 25 Nov 2021←4 Years→Current | Active | |
| Merkland Tank Holdings Limited Director • Director | 2 Oct 2017←8 Years→Current | Active | |
| Merkland Tank Limited Director • Director | 2 Oct 2017←8 Years→Current | Active | |
| LCH Holdings Limited Director • Director | 29 Nov 2016←9 Years→Current | Active | |
| John S. Pirrie & Family Holdings Limited Director • Director | 29 Nov 2016←9 Years→Current | Active | |
| Cadder Holdings Limited Director • Director | 29 Nov 2016←9 Years→Current | Active | |
| Astec Precision Holdings Limited Director • Director | 23 Jul 2015←10 Years→Current | Active | |
| Astec Precision Limited Director • Director | 23 Jul 2015←10 Years→Current | Active | |
