| Company | Timeline | Status | |
| Golondrinas Ecosse Limited Director • Director | 13 Apr 2011←14 Years→Current | Active | |
| Harpers (Aberdeen) Limited Director • Director | 1 May 1998←27 Years→16 Oct 2025 | Active | |
| The Harper Motor Company Limited Director • Director | 1 May 1998←27 Years→16 Oct 2025 | Active | |
| Macharg, Rennie & Lindsay, Limited Director • Company Director | 5 May 1993←32 Years→16 Oct 2025 | Active | |
| Arnold Clark Automobiles Limited Director • Company Director | 31 Aug 1989←36 Years→Current | Active | |
| 454 West End Motors Limited Director • Company Director | 31 Aug 1989←36 Years→16 Oct 2025 | Active | |
