| Company | Timeline | Status | |
| Folio Trustee Limited Director • Book Publisher | 26 Nov 2021←3 Years→Current | Active | |
| Folio Fine Book Society Limited(The) Director • Publisher | 6 Apr 2018←3 Years→30 Nov 2021 | Active | |
| Folio Fine Editions Limited Director • Publisher | 6 Apr 2018←3 Years→30 Nov 2021 | Active | |
| Folio Society Limited(The) Director • Publisher | 11 Feb 2015←6 Years→30 Nov 2021 | Active | |
| Folio Holdings Limited Director • Publisher | 28 Oct 2008←13 Years→30 Nov 2021 | Active | |
| The Helen Hamlyn Trust Director • Retired | 27 Nov 2000←24 Years→Current | Active | |
