| Company | Timeline | Status | |
| 19 Queensgate Terrace Limited Director • Literary Agent | 20 Sep 1995←2 Years 4 Months→19 Jan 1998 | Active | |
| Headline Enterprises Limited Secretary • Unreported | 31 Dec 1991←29 Years→26 Oct 2021 | Dissolved | |
| Headline Enterprises Limited Director • Literary Agent | 31 Dec 1991←29 Years→26 Oct 2021 | Dissolved | |
| Hamer Books Limited Director • Literary Agent | 17 Dec 1991←29 Years→26 Oct 2021 | Dissolved | |
| Jill Foster Limited Director • Literary Agent | 19 Sep 1991←33 Years→11 Feb 2025 | Dissolved | |
| Jill Foster Limited Secretary • Unreported | 19 Sep 1991←33 Years→11 Feb 2025 | Dissolved | |
