| Company | Timeline | Status | |
Airvent Installations Limited Secretary • Unreported | 6 Nov 1998←15 Years→8 Apr 2014 | Dissolved | |
| Woodwaste Control Engineering Limited Secretary • Unreported | 31 Dec 1991←31 Years→17 Aug 2023 | Active | |
| Spira U.K. Limited Secretary • Unreported | 21 Aug 1991←32 Years→17 Aug 2023 | Active | |
