| Company | Timeline | Status | |
| Blackfive Valves Limited Director • Secretary | 5 Jul 2000←25 Years→Current | Active | |
| Blackfive Valves Limited Secretary • Secretary | 5 Jul 2000←25 Years→Current | Active | |
| Blackfive Engineering Limited Director • Secretary | 5 Jul 2000←25 Years→Current | Active | |
| Blackfive Valves Limited Director • Secretary | 5 Jul 2000←24 Years→21 Feb 2025 | Active | |
| Blackfive Valves Limited Secretary • Secretary | 5 Jul 2000←24 Years→21 Feb 2025 | Active | |
| Blackfive Engineering Limited Director • Secretary | 5 Jul 2000←24 Years→21 Feb 2025 | Active | |
| Blackfive Engineering Limited Secretary • Unreported | 27 Mar 2000←25 Years→Current | Active | |
| Blackfive Engineering Limited Secretary • Unreported | 27 Mar 2000←24 Years→21 Feb 2025 | Active | |
| Blackfive Engineering Group Ltd Director • Secretary | 21 Sep 1991←34 Years→Current | Active | |
| Blackfive Engineering Group Ltd Secretary • Unreported | 21 Sep 1991←34 Years→Current | Active | |
