| Company | Timeline | Status | |
| Tectorius (UK) Limited Director • Unreported | 12 Sep 2012←13 Years→Current | Active | |
| Alston Projects Limited Director • Unreported | 12 Sep 2012←13 Years→Current | Active | |
Alston Asset Management Limited Director • Director | 12 Sep 2012←2 Years 1 Month→17 Oct 2014 | Dissolved | |
| Alston Projects Limited Secretary • Unreported | 3 Feb 2003←22 Years→Current | Active | |
| Tectorius (UK) Limited Secretary • Unreported | 3 Feb 2003←22 Years→Current | Active | |
| Alston Holdings Limited Director • Unreported | 31 Dec 2002←22 Years→Current | Active | |
Alston Asset Management Limited Secretary • Production Director | 28 Feb 2001←13 Years→17 Oct 2014 | Dissolved | |
| Alston Holdings Limited Secretary • Production Director | 26 Feb 2001←24 Years→Current | Active | |
| Alston Pre-Applied Limited Secretary • Unreported | 16 Mar 1999←26 Years→Current | Active | |
| Alston Pre-Applied Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
