| Company | Timeline | Status | |
| The Injured Jockeys Fund Director • Chartered Accountant | 14 Aug 2025←3 Months→Current | Active | |
| The Bibury Club Limited Director • Chartered Accountant | 16 Apr 2018←7 Years→Current | Active | |
| RB (PWT) LLP Designated LLP Member • Unreported | 1 Dec 2017←8 Years→Current | Active | |
| S&W Partners LLP Non-designated LLP Member • Unreported | 1 May 2012←5 Years→21 Feb 2018 | Active | |
| The Coach & Horses Management Company Limited Director • Chartered Accountant | 26 Oct 2009←16 Years→Current | Active | |
| S&W Partners Audit Limited Director • Chartered Accountant | 2 Jul 2009←8 Years→30 Nov 2017 | Active | |
| JC Payroll Services Limited Director • Chartered Accountant | 1 Jan 2004←1 Year 11 Months→7 Dec 2005 | Active | |
| James Cowper Trustees Limited Director • Chartered Accountant | 1 Jan 2004←4 Years→1 Sep 2008 | Active | |
| Kreston James Cowper Limited Director • Chartered Accountant | 1 Jan 2004←5 Years→30 Jun 2009 | Dissolved | |
