| Company | Timeline | Status | |
| Iste Science Publishing Ltd Secretary • Unreported | 9 May 2005←20 Years→Current | Active | |
| Iste Editions Limited Secretary • Unreported | 11 Oct 2004←21 Years→Current | Active | |
| Iste Limited Secretary • Unreported | 22 Sep 2004←21 Years→Current | Active | |
| Iste Press Limited Secretary • Unreported | 26 Aug 2004←21 Years→Current | Active | |
