| Company | Timeline | Status | |
| Lockman Electronic Holdings Limited Director • Engineer | 20 Jun 1992←7 Months→29 Jan 1993 | Dissolved | |
| Chelton Limited Director • Engineer | 20 Jun 1992←7 Months→29 Jan 1993 | Active | |
Chelton (Forming) Limited Director • Engineer | 20 Jun 1992←7 Months→29 Jan 1993 | Dissolved | |
Cobham Comms Limited Director • Engineer | 20 Jun 1992←7 Months→29 Jan 1993 | Dissolved | |
