| Company | Timeline | Status | |
| Collegiate Management Limited Director • Organ Builder | 22 Oct 2007←6 Years→17 Sep 2014 | Active | |
| The Institute Of British Organ Building Director • Organ Builder | 29 Mar 2003←4 Years→21 Apr 2007 | Dissolved | |
| David Wells Organ Builders Limited Director • Unreported | 30 Sep 1999←26 Years→Current | Active | |
| Incorporated Society Of Organ Builders(The) Director • Master Organ Builder | 23 Mar 1995←1 Year 9 Months→15 Jan 1997 | Active | |
