| Company | Timeline | Status | |
| Redmayne HGS Limited Director • Engineer | 18 Mar 2008←9 Years→1 Sep 2017 | Dissolved | |
| Redmayne Engineering Limited Director • Engineer | 20 Oct 1992←24 Years→1 Sep 2017 | Active | |
| S.E.H. Limited Director • Precision Engineer | 9 Nov 1991←2 Years 8 Months→8 Jul 1994 | Active | |
