| Company | Timeline | Status | |
| Roehampton Trust Limited Director • Publisher Umbria Press | 21 Mar 2012←9 Years→6 Jan 2022 | Active | |
Macmillan Press Limited Director • Publisher | 7 May 1992←2 Years→31 May 1994 | Dissolved | |
| Springer Nature (UK) Limited Director • Publisher | 7 May 1992←9 Months→12 Feb 1993 | Active | |
Sidgwick & Jackson,Limited Director • Publisher | 7 May 1992←2 Years→31 May 1994 | Dissolved | |
| Pan Bookshops Limited Director • Managing Director | 17 Jul 1991←2 Years 10 Months→31 May 1994 | Active | |
| Pan Books Limited Director • Publisher | 17 Jul 1991←2 Years 10 Months→31 May 1994 | Active | |
| Macmillan Children's Books Limited Director • Publisher | 1 Jun 1991←3 Years→31 May 1994 | Active | |
| Springer Nature Limited Director • Publisher | 7 May 1991←4 Years→7 May 1995 | Active | |
| Springer Nature Holdings Limited Director • Publisher | 7 May 1991←3 Years→31 May 1994 | Active | |
| Pan Macmillan Limited Director • Publisher | 19 Apr 1991←4 Years→19 Apr 1995 | Active | |
