| Company | Timeline | Status | |
| M J Gallagher Holdings Limited Director • Director | 11 Nov 2025←1 Month→Current | Active | |
| Headon Hall Management Company Limited Director • Commercial Director | 31 May 2006←12 Years→18 Oct 2018 | Active | |
| J.W. Developers Limited Director • Unreported | 28 Feb 2005←20 Years→Current | Active | |
| R.C. Plant Hire Limited Director • Director | 11 Jun 2003←22 Years→Current | Active | |
| Michael J Gallagher Contractors Limited Director • Surveyor | 20 Jul 2001←24 Years→Current | Active | |
