| Company | Timeline | Status | |
| Correx Limited Director • Consultant | 1 Jun 2009←7 Years→3 Apr 2017 | Active | |
| Institute Of Corrosion Director • Consultant | 25 Apr 2006←3 Years→31 May 2009 | Active | |
| Keith A Umpleby Ltd Director • Corrosion Consultant | 29 Apr 2003←18 Years→4 Jan 2022 | Dissolved | |
| Institute Of Corrosion Director • Technical Manager | 20 Oct 1993←1 Year 7 Months→1 Jun 1995 | Active | |
