| Andrew John Gordon Chater | Director | 11 Jan 1993 | 2 Sept 1993 | Australian | 65 years |
| Anthony Graham Jones | Secretary | 1 Jan 1993 | 8 Oct 1993 | British | - |
| Catherine Bernadette Wheatley | Secretary | 2 May 1996 | 1 Jul 1998 | British | - |
| Colin Richard Clapham | Secretary | 1 Dec 2009 | 19 Oct 2018 | - | - |
| Fiona Elizabeth Middleton | Director | 6 Mar 2009 | 5 Nov 2013 | British | 58 years |
| Ian James Fleming | Director | 2 Sept 1993 | 30 Nov 1994 | British | 73 years |
| James John Jordan | Director | 4 Feb 2002 | 31 Jul 2025 | British | 65 years |
| James John Jordan | Secretary | 20 Dec 2004 | 26 Jan 2009 | British | - |
| Karen Lorraine Atterbury | Secretary | 4 Feb 2002 | 1 Dec 2009 | British | - |
| Matthew Robert Kelly | Director | 30 Jul 2008 | 6 Mar 2009 | British | 50 years |
| Michael Andrew Lonnon | Secretary | 29 Nov 2023 | 9 Dec 2024 | - | - |
| Michael Andrew Lonnon | Director | 5 Nov 2013 | 9 Dec 2024 | British | 69 years |
| Molly Banham | Secretary | 19 Oct 2018 | 29 Nov 2023 | - | - |
| Richard Joseph Beauprez | Director | 1 Jan 1993 | 11 Jan 1993 | British | 81 years |
| Richard Seymour Waghorn | Director | 30 Nov 1994 | 30 Jul 2008 | British | 71 years |
| Stefan Edward Bort | Director | 1 Jan 1993 | 4 Feb 2002 | British | 66 years |
| Stefan Edward Bort | Secretary | 8 Oct 1993 | 8 Jan 1994 | British | - |
| Stefan Edward Bort | Secretary | 1 Jul 1998 | 4 Feb 2002 | British | - |
| Steven Leven | Secretary | 8 Jan 1994 | 21 Feb 1996 | British | - |
