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