| Company | Timeline | Status | |
| Quercus Books Limited Secretary • Company Secretary & Manager | 12 Feb 2009←5 Years→16 Oct 2014 | Dissolved | |
| Quercus Publishing Limited Secretary • Commercial Manager | 30 Oct 2007←6 Years→16 Oct 2014 | Dissolved | |
| Quercus Editions Limited Secretary • Commercial Manager | 30 Oct 2007←6 Years→16 Oct 2014 | Active | |
