| Alan William Frizzell | Director | 28 Apr 2017 | 28 Jun 2019 | British | 62 years |
| Anthony Arthur Berry | Director | 3 Jul 1992 | 31 Mar 2005 | British | 111 years |
| Anthony William Easter | Director | 1 Oct 1992 | 1 Apr 2006 | British | 86 years |
| Colin John Roberts | Director | 3 Jul 1992 | 30 Sept 2001 | British | 87 years |
| Daniel Alexander Jago | Director | 31 May 2016 | 28 Apr 2017 | British | 65 years |
| David Lars Manwaring Robertson | Director | 3 Jul 1992 | 16 Mar 1999 | British | 109 years |
| David William Francis Berry Green | Director | 22 Apr 2005 | 1 Apr 2006 | British | 57 years |
| Elizabeth Margaret Rudd | Director | 1 Jun 1998 | 1 Apr 2006 | British | 60 years |
| Ernest John Prestwich Elliott | Director | 3 Jul 1992 | 1 Apr 2006 | British | 95 years |
| Francis Christopher David Berry Green | Director | 3 Jul 1992 | 1 Apr 2006 | British | 93 years |
| Gemma May Robson | Secretary | 28 Apr 2017 | 23 Jul 2020 | - | - |
| Hugh Francis Dering Sturges | Director | 12 Jun 2001 | 17 Feb 2015 | British | 69 years |
| Hugh Francis Dering Sturges | Secretary | 1 May 2001 | 1 Apr 2006 | British | - |
| Janet Ann Impey | Secretary | 1 Apr 2006 | 28 Apr 2017 | British | - |
| Jeremy Winslow Parsons | Director | 1 Apr 2011 | 31 May 2016 | British | 64 years |
| John Berchmans Mcgowan | Director | 3 Jul 1992 | 30 Jun 1994 | Irish | 88 years |
| John Hedley Nicholas Wright | Director | 3 Jul 1992 | 30 Jun 1996 | British | 80 years |
| John Randall Rudd | Director | 3 Jul 1992 | 1 Apr 2006 | British | 100 years |
| Keith John Mansfield | Director | 3 Jul 1992 | 31 Dec 1992 | British | 91 years |
| Martin Alexander Cooke | Director | 28 Apr 2017 | 1 Sept 2020 | British | 65 years |
| Michael James Ferguson | Secretary | 3 Jul 1992 | 30 Apr 2001 | British | - |
| Natalie Elizabeth Tennent | Director | 17 Feb 2015 | 28 Apr 2017 | British | 56 years |
| Simon George Francis Graham Berry | Director | 28 Jun 1994 | 28 Apr 2017 | British | 69 years |
| Simon Manwaring Robertson | Director | 1 Jun 1998 | 1 Apr 2006 | British | 85 years |