| Company | Timeline | Status | |
| Sound Sense Director • Musician Composer Workshop Lea | 18 Sep 2003←1 Year 10 Months→5 Aug 2005 | Active | |
| Hempson Rock Ltd Secretary • Unreported | 1 Jan 1970←25 Years→1 Mar 1995 | Active | |
| Hempson Rock Ltd Director • Music Consultant | 1 Jan 1970←46 Years→14 Nov 2016 | Active | |
