| Company | Timeline | Status | |
| Robert Mason Developments Limited Director • Director | 17 Aug 2018←7 Years→Current | Active | |
| Robert Mason Holdings Limited Director • Director | 20 Apr 2007←18 Years→Current | Active | |
| Fife INNS (Cupar) Limited Director • Builder | 22 Jun 1991←34 Years→Current | Active | |
| Robert Mason Contracts Limited Director • Builder | 21 May 1990←35 Years→Current | Active | |
