| Company | Timeline | Status | |
| Volkerstevin Limited Director • Director | 21 Nov 2005←3 Years→18 May 2009 | Active | |
| Volkerfitzpatrick Limited Director • Director | 17 May 2004←5 Years→18 May 2009 | Active | |
| Volkerwessels UK Limited Director • General Counsel | 3 Dec 2002←13 Years→1 Sep 2016 | Active | |
