| Company | Timeline | Status | |
| Harpin Family Holdings Ltd Director • Unreported | 22 Dec 2023←2 Years 1 Month→Current | Active | |
| SML Subsidence Ltd Director • Director | 13 May 2022←3 Years→Current | Active | |
| SML Group Limited Director • Director | 6 Jul 2015←1 Day→6 Jul 2015 | Active | |
| SML Payroll Limited Director • Unreported | 3 Jul 2015←10 Years→Current | Active | |
| SML Surveys Limited Director • Director | 3 Jul 2015←10 Years→Current | Active | |
| Subsidence Monitoring Limited Director • Director | 5 Jul 2010←15 Years→Current | Active | |
