| Company | Timeline | Status | |
| Baylis Ventures Limited Director • Retired Solicitor | 5 Feb 2008←7 Years→31 Aug 2015 | Active | |
| Thames Valley Air Ambulance (Trading) Limited Secretary • Unreported | 26 Sep 2007←2 Years 6 Months→9 Apr 2010 | Active | |
| Baylis Trustee Company Limited Director • Retired Solicitor | 8 May 2007←8 Years→31 Aug 2015 | Active | |
| Baylis Estates Limited Director • Retired Solicitor | 15 Oct 2004←10 Years→31 Aug 2015 | Active | |
| Thames Valley Air Ambulance Secretary • Unreported | 16 Jul 2003←6 Years→31 Mar 2010 | Active | |
Life Education Centres Thames Valley Limited Secretary • Unreported | 20 Oct 1999←17 Years→13 Apr 2017 | Dissolved | |
| John Baylis Leisure Limited Director • Retired Solicitor | 24 Jul 1997←18 Years→31 Aug 2015 | Active | |
| John Baylis Limited Director • Retired | 1 Nov 1995←19 Years→31 Aug 2015 | Active | |
| J.T.Baylis & Company Limited Director • Solicitor (retired) | 1 Nov 1995←19 Years→31 Aug 2015 | Active | |
| Mithras Limited Director • Solicitor | 3 Jan 1993←2 Years 10 Months→31 Oct 1995 | Active | |
