| Company | Timeline | Status | |
| Iste Sciences Encyclopedia Ltd Director • Publisher | 28 Nov 2018←6 Years→Current | Active | |
| Iste Press Limited Director • Publisher | 26 Aug 2004←21 Years→Current | Active | |
| Iste Limited Director • Publisher | 27 May 2003←22 Years→Current | Active | |
| Iste Science Publishing Ltd Director • Publisher | 16 May 2003←22 Years→Current | Active | |
| Iste Press Limited Director • Publisher | 15 Mar 2001←1 Year 2 Months→29 May 2002 | Active | |
| Iste Editions Limited Director • Publisher | 13 Apr 1999←26 Years→Current | Active | |
