| Company | Timeline | Status | |
| Carmichael Engineering & Consulting Limited Director • Chief Executive Officer | 16 Mar 2007←18 Years→Current | Active | |
| Carmichaeluk Civil Engineering Recruitment Limited Director • Unreported | 18 Mar 2004←21 Years→Current | Active | |
| Carmichael UK Trades & Labour Limited Director • Unreported | 25 Feb 2004←21 Years→Current | Active | |
| Carmichael Site Services Limited Director • Unreported | 19 Mar 1997←28 Years→Current | Active | |
