| Company | Timeline | Status | |
| Regian Properties Limited Director • Engineer | 25 May 1991←34 Years→Current | Active | |
| Harmby Properties Limited Director • Engineer | 30 Mar 1973←52 Years→Current | Active | |
| Bellerby Properties Limited Director • Engineer | 9 Sep 1971←54 Years→Current | Active | |
| Arrathorne Properties Limited Director • Engineer | 2 Jun 1970←55 Years→Current | Active | |
