| Company | Timeline | Status | |
| Graham Investment Projects Limited Director • Unreported | 26 May 2009←16 Years→Current | Active | |
| Graham Asset Management Limited Director • Chartered Builder | 26 May 2009←16 Years→Current | Active | |
| John Graham Holdings Limited Director • Chartered Builder | 30 Mar 2007←18 Years→Current | Active | |
| John Graham Developments Limited Director • Chartered Builder | 30 Mar 2007←2 Days→1 Apr 2007 | Active | |
| Moss Lane Holdings Limited Director • Chartered Builder | 24 Oct 2006←19 Years→Current | Active | |
| Irish Waterways Limited Director • None | 30 Jun 2001←24 Years→Current | Active | |
| Construction Employers Federation Limited Director • Building Contractor | 19 Apr 1999←13 Years→7 Feb 2013 | Active | |
| John Graham Construction Limited Director • Chartered Builder | 21 Jan 1994←31 Years→Current | Active | |
| Laganview Management Company Limited Director • Chartered Builder | 1 Dec 1993←4 Years→1 Apr 1998 | Active | |
