| Company | Timeline | Status | |
| Downtown Radio Limited Director • Co.director | 6 May 1974←26 Years→25 Aug 2000 | Active | |
| Newtownards Chronicle Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| D. E. Alexander & Sons, Limited Secretary • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| D. E. Alexander & Sons, Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
