| Company | Timeline | Status | |
| RPG Rail Ltd Director • Unreported | 15 Sep 2022←3 Years→Current | Active | |
| Ricardo Certification Limited Director • Railway Design Consultant | 6 Jul 2017←5 Years→29 Jul 2022 | Active | |
| Radical International Limited Director • Railway Design Consultant | 7 Dec 2000←3 Years→12 Mar 2004 | Active | |
