| Company | Timeline | Status | |
| A.P.C. Process Engineering Limited Director • Company Director | 31 Mar 2008←17 Years→Current | Active | |
| Erg Process Technologies Limited Director • Engineer | 18 Oct 2001←24 Years→Current | Active | |
| Erg Process Technologies Limited Secretary • Engineer | 18 Oct 2001←24 Years→Current | Active | |
| Erg (Air Pollution Control) Limited Director • Company Director | 18 Oct 2001←24 Years→Current | Active | |
| Erg (Air Pollution Control) Limited Secretary • Unreported | 18 Oct 2001←24 Years→Current | Active | |
| Alderley Process Technologies Limited Director • Director | 7 Sep 1995←2 Years 5 Months→4 Mar 1998 | Active | |
| Jordan Kent Metering Systems Ltd Director • Engineer | 1 Oct 1992←5 Years→4 Mar 1998 | Dissolved | |
