| Company | Timeline | Status | |
| Quartzinvest Properties Ltd Director • Accountant | 13 Jul 2011←14 Years→Current | Active | |
| Quartzcoil Ltd Director • Accountant | 29 Jan 2008←17 Years→Current | Active | |
| Quartzinvest Limited Director • Accountant | 6 Dec 2006←19 Years→Current | Active | |
| Quartzelec Pension Trustees Limited Director • Accountant | 3 Aug 2006←19 Years→Current | Active | |
| Quartzteam Ltd Director • Accountant | 13 Jul 2004←21 Years→Current | Active | |
| Quartzelec Ltd Secretary • Accountant | 27 Feb 2004←21 Years→Current | Active | |
| Quartzteam Ltd Secretary • Accountant | 27 Feb 2004←21 Years→Current | Active | |
| Quartzelec Ltd Director • Accountant | 4 Aug 2003←22 Years→Current | Active | |
| Boughton Holdings Director • Accountant | 10 Dec 2002←6 Months→30 Jun 2003 | Liquidation | |
| Gec Alsthom Energy Systems Limited Director • Accountant | 28 Oct 2002←23 Years→Current | Active | |
