| Company | Timeline | Status | |
| Scottish Electrical Contractors Insurance Limited Director • Company Director | 7 Jun 2024←1 Year 4 Months→Current | Active | |
21ST Century Renewables Ltd Director • Electrical Contractor | 9 Aug 2011←4 Years→4 Sep 2015 | Dissolved | |
| 21ST Century Heating Limited Director • Electrical Contractor | 15 May 2008←17 Years→Current | Active | |
| Robert A.S. Crockett And Partners Limited Director • Electrician | 20 Aug 1991←34 Years→Current | Active | |
