| Company | Timeline | Status | |
| Columbas Homes Limited Director • Unreported | 4 Dec 2019←5 Years→Current | Active | |
| McGowan Family Company Limited Director • Unreported | 20 Mar 2012←13 Years→Current | Active | |
| William McGowan (Lettings) Limited Director • Unreported | 2 Jun 2003←22 Years→Current | Active | |
William McGowan Leisure Limited Director • Property Lettings | 26 May 1994←11 Years→21 Dec 2005 | Dissolved | |
