| Company | Timeline | Status | |
| Pipetech Operations Limited Director • Director | 26 Jun 2025←5 Months→Current | Active | |
| Denholm Pipetech Holdings Limited Director • Director | 26 Jun 2025←5 Months→Current | Active | |
| Andidrain Limited Director • Company Director | 29 Jul 2022←3 Years→Current | Active | |
| Inchyra Hazco Limited Director • Director | 10 Mar 2020←3 Years→17 Oct 2023 | Dissolved | |
| Denholm Environmental Limited Director • Company Director | 26 Mar 2012←13 Years→Current | Active | |
