| Company | Timeline | Status | |
| TRG Marinas Limited Director • Director | 20 Jul 2020←5 Years→Current | Active | |
| The Rothen Group Limited Director • Director | 31 Aug 2016←9 Years→Current | Active | |
| R G Piling Hammers Limited Director • Director | 31 Aug 2016←9 Years→Current | Active | |
| Caggys Boatyard Limited Director • Civil Engineer | 31 May 2016←6 Years→27 Sep 2022 | Dissolved | |
| Ian Rothen Limited Director • Unreported | 13 Apr 2012←13 Years→Current | Active | |
