| Company | Timeline | Status | |
| 55 Gee Street Limited Director • Unreported | 11 May 2023←2 Years 5 Months→Current | Active | |
| Hbal Trustees Limited Director • Unreported | 31 Jul 2021←4 Years→Current | Active | |
| Hawkins Brown Architecture Limited Director • Architect | 2 Mar 2021←4 Years→Current | Active | |
| HB Holdings 2020 Limited Director • Architect | 14 Dec 2020←4 Years→Current | Active | |
| Hawkins Brown Design Limited Director • Architect | 9 Feb 2015←6 Years→16 Apr 2021 | Active | |
Mantle (HB) LLP Designated LLP Member • Unreported | 10 May 2013←5 Years→16 Apr 2019 | Dissolved | |
| Hawkins \ Brown International Limited Director • Architect | 13 Sep 2012←8 Years→16 Apr 2021 | Active | |
| Hawkins Brown Architects LLP Designated LLP Member • Unreported | 20 May 2008←12 Years→16 Apr 2021 | Active | |
Riba Trust Limited Director • Architect | 27 Mar 2008←3 Years→7 Sep 2011 | Dissolved | |
| Kearns Morrison Limited Director • Architect | 30 Mar 2007←18 Years→Current | Active | |
