| Company | Timeline | Status | |
| Robert K Muir Ltd Director • Surveyor | 10 Feb 2011←14 Years→Current | Active | |
Robert Thomas Limited Director • Chartered Surveyor | 27 Mar 2001←13 Years→12 Aug 2014 | Dissolved | |
| Avalon Surveyors Ltd Director • Surveyor | 9 Nov 2000←18 Years→31 Dec 2018 | Active | |
| R. Muir (Builders) Limited Director • Builder | 5 May 1991←34 Years→Current | Liquidation | |
