| Company | Timeline | Status | |
| James Cowper Capital Limited Director • Accountant | 30 Apr 2010←6 Years→27 Oct 2016 | Dissolved | |
| JC Payroll Services Limited Director • Accountant | 11 Nov 2009←15 Years→Current | Active | |
| Newbury Ymca Director • Chartered Accountant | 13 Jul 2009←1 Month→13 Aug 2009 | Active | |
| JC Payroll Services Limited Director • Chartered Accountant | 13 Dec 2004←11 Months→7 Dec 2005 | Active | |
| James Cowper Trustees Limited Director • Chartered Accountant | 13 Dec 2004←3 Years→1 Sep 2008 | Active | |
| Vinculum (Oxfordshire Women's Network) Limited Director • Chartered Accountant | 2 Feb 2001←2 Years 11 Months→22 Jan 2004 | Dissolved | |
