| Company | Timeline | Status | |
| 16 Triangle South RTM Company Limited Director • Unreported | 22 Oct 2025←2 Months→Current | Active | |
| Richmond Rental Holdings Ltd Director • Unreported | 27 Apr 2022←3 Years→Current | Active | |
| Koller Holdings Ltd Director • Unreported | 16 Jun 2020←5 Years→Current | Active | |
| Richmond Property Services Ltd Director • Unreported | 5 Dec 2018←7 Years→Current | Active | |
| Richmond Rental Solutions Limited Director • Unreported | 22 Feb 2016←9 Years→Current | Active | |
| T P Koller-Kovacs LLP Designated LLP Member • Unreported | 2 Jul 2010←15 Years→Current | Active | |
Richmond Property Services Ltd Director • Unreported | 19 Feb 2009←8 Years→1 Aug 2017 | Dissolved | |
