| Company | Timeline | Status | |
| Argyll Resources Limited Director • Unreported | 20 Dec 2007←17 Years→Current | Active | |
| ARG Enterprises Ltd Director • Unreported | 23 Nov 2005←19 Years→Current | Active | |
| Oban Skip Hire Ltd Director • Unreported | 10 Sep 2004←21 Years→Current | Active | |
| G M S Enterprises Ltd Director • Unreported | 24 Aug 2001←24 Years→Current | Active | |
| West Highland Gas Limited Director • Unreported | 26 Nov 1999←25 Years→Current | Active | |
| John Maclachlan (Quarries) Limited Secretary • Builder | 4 Dec 1989←18 Years→8 Jan 2008 | Active | |
| John Maclachlan Limited Secretary • Unreported | 4 Dec 1989←18 Years→15 Jan 2008 | Active | |
| John Maclachlan (Quarries) Limited Secretary • Unreported | 28 Dec 1988←4 Days→1 Jan 1989 | Active | |
| John Maclachlan Limited Secretary • Unreported | 28 Dec 1988←4 Days→1 Jan 1989 | Active | |
| John Maclachlan (Quarries) Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
