| Company | Timeline | Status | |
| The Society Of Authors Director • Publisher | 21 Nov 2013←3 Years→22 Nov 2016 | Active | |
| Persephone Music Ltd Director • Writer | 17 Apr 1998←27 Years→1 Jul 2025 | Dissolved | |
| Persephone Press Limited Director • Writer | 27 Mar 1998←27 Years→1 Jul 2025 | Dissolved | |
| Persephone Publishing Limited Director • Writer | 27 Mar 1998←27 Years→1 Jul 2025 | Dissolved | |
| Persephone Books Limited Director • Writer | 27 Mar 1998←27 Years→Current | Active | |
