| Company | Timeline | Status | |
| St. Columba's By The Castle Resources Limited Director • Bookshop Proprietor | 25 Nov 2018←7 Years→25 Nov 2025 | Dissolved | |
| Avizandum Publishing Limited Director • Bookshop Proprietor | 1 Feb 2002←23 Years→Current | Active | |
| St. Columba's By The Castle Resources Limited Director • Proprietor Bookshop | 1 Feb 2000←6 Years→1 Aug 2006 | Dissolved | |
