| Company | Timeline | Status | |
| Protherm Engineering Holdings Limited Director • Director | 30 Jun 2014←5 Years→30 Mar 2020 | Active | |
| Protherm Engineering (Shenstone) Limited Director • Engineer | 25 Feb 1998←22 Years→30 Mar 2020 | Active | |
| Protherm Engineering (Walsall) Limited Director • Director | 8 Jun 1992←22 Years→15 Dec 2014 | Active | |
