| Company | Timeline | Status | |
| Shipham Valves Limited Director • Retired | 19 Nov 1998←2 Years 1 Month→5 Jan 2001 | In Administration | |
| Telegan Gas Monitoring Limited Director • Director | 5 Jul 1993←9 Months→8 Apr 1994 | Dissolved | |
| Sofis Limited Director • Company Director | 8 Nov 1991←4 Months→1 Apr 1992 | Active | |
| Fortress Interlocks Limited Director • Company Director | 15 Aug 1991←1 Year 2 Months→3 Nov 1992 | Active | |
| Halma Public Limited Company Director • Company Director | 15 Aug 1991←2 Years 7 Months→8 Apr 1994 | Active | |
| Halma Safety Limited Director • Company Director | 14 Aug 1991←7 Months→1 Apr 1992 | Dissolved | |
| Crowcon Detection Instruments Limited Director • Director | 1 Jan 1970←24 Years→8 Apr 1994 | Active | |
