| Company | Timeline | Status | |
| Mammal Society(The) Director • Land Based Verifier And Assessor | 10 Apr 2022←3 Years→Current | Active | |
| Derek Crawley Limited Director • Director | 5 Aug 2013←12 Years→Current | Active | |
| Mammal Society(The) Director • Asessor Lecturer | 10 Mar 2012←6 Years→21 Apr 2018 | Active | |
