| Company | Timeline | Status | |
| Markham Street Properties Limited Director • Director | 14 Dec 2022←2 Years 10 Months→Current | Active | |
| Roebuck Road Properties Limited Director • Director | 16 Mar 2022←3 Years→Current | Active | |
| Felix Rosenstiel's Group Limited Director • Director | 9 Mar 2022←3 Years→Current | Active | |
| Fine Art Solutions Limited Director • Director | 23 Dec 2021←3 Years→Current | Active | |
| 20/21 Fine Art Limited Director • Company Director | 8 Aug 2019←6 Years→Current | Active | |
| Cambrian Tin Sculpture Limited Director • Director | 18 Mar 2019←4 Years→22 Sep 2023 | Dissolved | |
| Felix Rosenstiel's Widow & Son Limited Director • Company Director | 26 Aug 1997←28 Years→Current | Active | |
| The Fine Art Publishing Company Limited Director • Fine Art Publisher | 1 Jan 1997←1 Year 3 Months→30 Apr 1998 | Active | |
