| Company | Timeline | Status | |
| Buckingham Gate Management Company (Southampton) Limited Director • Literary Agent | 30 Aug 2022←3 Years→Current | Active | |
| JFL Agency Limited Director • Literary Agent | 28 Apr 2011←14 Years→Current | Active | |
| Jill Foster Limited Director • Literary Agent | 1 Feb 2008←3 Years→1 Jul 2011 | Dissolved | |
| Castle Hill Management Co. (Reading) Limited Director • Literary Agent | 7 Dec 2007←4 Years→31 Aug 2012 | Active | |
