| Company | Timeline | Status | |
| Firfields Roads Limited Director • Retired Ceo | 29 Aug 2024←8 Months→4 May 2025 | Active | |
| Firth Rixson Limited Director • Company Director | 10 Dec 1997←5 Years→3 Feb 2003 | Active | |
St. Georges Hill Golf Club (Holdings) Limited Director • Company Director | 3 Feb 1996←2 Years 12 Months→30 Jan 1999 | Dissolved | |
| St.Georges Hill Golf Club Limited Director • Company Director | 3 Feb 1996←2 Years 12 Months→30 Jan 1999 | Active | |
Aircontrol Technologies Limited Director • Company Director | 2 Jan 1992←3 Years→14 Feb 1995 | Dissolved | |
| Ametek Airtechnology Group Limited Director • Company Director | 21 Dec 1990←4 Years→14 Feb 1995 | Active | |
| Howden Group Limited Director • Company Director | 21 Dec 1990←1 Year 1 Month→13 Feb 1992 | Active | |
| Howden Compressors Limited Director • Director | 4 Jan 1989←8 Years→24 Apr 1997 | Active | |
| Howden Engineering Limited Director • Managing Director | 30 Dec 1988←6 Years→9 Oct 1995 | Active | |
| James Howden & Company Limited Director • Accountant | 30 Dec 1988←8 Years→25 Apr 1997 | Active | |
