| Company | Timeline | Status | |
| Permasteelisa (UK) Limited Director • Director | 15 Mar 2012←7 Years→25 Nov 2019 | Active | |
| Josef Gartner GMBH Director • None | 11 May 2011←14 Years→8 Oct 2025 | Converted/Closed | |
| Josef Gartner GMBH Director • None | 11 May 2011←11 Years→31 Mar 2023 | Converted/Closed | |
| Josef Gartner & Co. U.K. Limited Director • Director | 26 Jun 2002←20 Years→31 Mar 2023 | Active | |
