| Company | Timeline | Status | |
| Park Springs Studios Ltd Director • Director/secretary | 2 Feb 2004←4 Years→31 Aug 2008 | Active | |
| Keystone Records Limited Director • Company Secretary | 23 Oct 1998←22 Years→21 Jul 2021 | Dissolved | |
| Keystone Records Limited Secretary • Company Secretary | 21 Oct 1998←16 Years→10 Aug 2015 | Dissolved | |
| Dee O'Reilly Management Limited Director • Administrator | 8 Dec 1991←29 Years→21 Jul 2021 | Dissolved | |
| Keystone (Ealing) Productions Limited Director • Business Administrator | 7 Nov 1991←29 Years→22 Jul 2021 | Active | |
| Orestes Music Publishing Limited Director • Administrator | 20 Oct 1991←16 Years→1 Sep 2008 | Active | |
