| Company | Timeline | Status | |
| The Diamond Trading Company Limited Secretary • Unreported | 30 Sep 2004←11 Months→9 Sep 2005 | Active | |
| De Beers Trademarks Limited Secretary • Unreported | 30 Sep 2004←11 Months→9 Sep 2005 | Dissolved | |
| De Beers Corporate Secretary Limited Secretary • Unreported | 30 Sep 2004←11 Months→7 Sep 2005 | Active | |
| De Beers UK Limited Secretary • Unreported | 30 Sep 2004←7 Months→9 May 2005 | Active | |
