| Company | Timeline | Status | |
| Charter Limited Director • Chief Executive | 22 Oct 2008←2 Years 9 Months→1 Aug 2011 | Active | |
| H UK Engineering Limited Director • Chief Executive | 14 Nov 2005←5 Years→11 Aug 2011 | Dissolved | |
| Howden Holdings Unlimited Director • Chief Executive | 31 Oct 2002←9 Years→23 Dec 2011 | Active | |
| Engart Fans Limited Director • Chief Executive | 31 Mar 2002←9 Years→11 Aug 2011 | Active | |
| James Howden & Company Limited Director • Chief Executive | 31 Mar 2002←9 Years→23 Dec 2011 | Active | |
| James Howden & Godfrey Overseas Limited Director • Chief Executive | 31 Aug 2001←9 Years→11 Aug 2011 | Active | |
| Howden Group Limited Director • Chief Executive | 31 Aug 2001←10 Years→23 Dec 2011 | Active | |
Wirth (UK) Limited Director • Chief Executive | 31 Dec 2000←10 Years→11 Aug 2011 | Dissolved | |
| Howden Engineering Limited Director • Chief Executive | 31 Dec 2000←10 Years→11 Aug 2011 | Active | |
Novenco Aerex Limited Director • Chief Executive | 31 Dec 2000←10 Years→11 Aug 2011 | Dissolved | |
