| Company | Timeline | Status | |
| Tectorius (UK) Limited Director • Engineer | 3 Feb 2003←3 Years→31 Dec 2006 | Active | |
| Alston Projects Limited Director • Engineer | 3 Feb 2003←3 Years→31 Dec 2006 | Active | |
| Alston Asset Management Limited Director • Director | 23 Feb 2001←5 Years→31 Dec 2006 | Dissolved | |
| Alston Pre-Applied Limited Director • Development Director | 12 Feb 1998←8 Years→31 Dec 2006 | Active | |
