| Company | Timeline | Status | |
| The Publishers Association Limited Director • Publishing  | 6 Apr 2000←5 Years→19 Apr 2005  | Active  | |
Pearson Heinemann Limited Director • Publisher  | 8 Jan 1996←8 Years→31 Mar 2004  | Dissolved  | |
Reed Educational Publishing Limited Director • Publisher  | 31 Jul 1991←1 Year 5 Months→31 Dec 1992  | Dissolved  | |
