| Company | Timeline | Status | |
| Rock Robertson Hesler Group Holdings Limited Director • Surveying | 10 Sep 2025←1 Month→Current | Active | |
| Peter Hesler Limited Director • Surveying | 14 Sep 2015←10 Years→Current | Active | |
Aequitas Rock LLP Designated LLP Member • Unreported | 18 May 2012←5 Years→24 Oct 2017 | Dissolved | |
| Rock Associates (Property) Ltd Director • Chartered Quantity Surveyor | 15 Oct 2001←24 Years→Current | Active | |
