| Company | Timeline | Status | |
| V A Henderson & Son Limited Director • Engineer | 17 May 2004←21 Years→Current | Active | |
| Henderson & Sons Limited Director • Director | 20 Feb 1998←27 Years→Current | Active | |
| W.T. Henderson (Plant & Haulage) Limited Director • Director | 2 Nov 1991←34 Years→Current | Active | |
| W.T. Henderson (Builders) Limited Director • Director | 30 Oct 1991←20 Years→27 Nov 2011 | Active | |
