| Company | Timeline | Status | |
| Head Of Zeus Limited Director • Director | 9 Sep 2011←9 Years→2 Jun 2021 | Active | |
| Quercus Publishing Limited Director • Publisher | 27 Apr 2005←3 Years→11 Feb 2009 | Dissolved | |
| Quercus Editions Limited Director • Publisher | 20 Apr 2005←3 Years→11 Feb 2009 | Active | |
| Quercus Books Limited Director • Company Director | 15 Mar 2005←3 Years→11 Feb 2009 | Dissolved | |
| Cassell Publishers Limited Director • Publisher | 14 Oct 1999←3 Years→23 Sep 2003 | Dissolved | |
| Cassell Educational Limited Director • Publisher | 14 Oct 1999←3 Years→23 Sep 2003 | Dissolved | |
| Victor Gollancz Limited Director • Publisher | 9 Oct 1999←3 Years→23 Sep 2003 | Dissolved | |
| 13114 Publishing Limited Director • Publisher | 9 Oct 1999←3 Years→23 Sep 2003 | Dissolved | |
| Rigel Publications Limited Director • Publisher | 9 Oct 1999←3 Years→23 Sep 2003 | Dissolved | |
| Blandford Publishing Limited Director • Publisher | 8 Oct 1999←3 Years→23 Sep 2003 | Dissolved | |
