| Company | Timeline | Status | |
| Surrey Archaeological Society Director • Retired | 16 Nov 2019←5 Years→Current | Active | |
CP Library Consultancy Ltd Director • Company Director | 14 Apr 2010←5 Years→15 Dec 2015 | Dissolved | |
| Octavia Hill Birthplace Museum Trust Director • Librarian Company Director | 18 Dec 2006←7 Years→11 Dec 2014 | Active | |
| Libraria Limited Director • Librarian | 1 Feb 2003←7 Years→6 May 2010 | Active | |
