| Company | Timeline | Status | |
| Diamond Project Services Ltd Director • Director | 1 Apr 2020←5 Years→Current | Active | |
| Kelvinair Limited Director • Director | 20 Nov 2001←23 Years→Current | Active | |
| Kelvinair Maintenance Services Ltd Director • Air Conditioning Engineer | 20 Jul 1999←26 Years→Current | Active | |
| Machenair Limited Director • Air Conditioning Engineer | 22 Aug 1994←7 Years→26 Apr 2002 | Active | |
