| Company | Timeline | Status | |
| Site Heat Treatment Services (GB) Limited Director • Unreported | 23 Apr 2013←12 Years→Current | Active | |
| Antolins (Port Talbot) Limited, Secretary • Unreported | 11 Apr 2006←19 Years→Current | Active | |
Kel-Don Limited Director • Company Director | 9 May 1996←21 Years→24 Oct 2017 | Dissolved | |
| Site Heat Treatment Services (UK) Limited Director • Unreported | 25 Feb 1991←34 Years→Current | Active | |
| Site Heat Treatment Services Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
