| Alastair Kennedy | Director | 1 Apr 1991 | 16 Jul 1991 | English | 79 years |
| Amanda Catherine Matthews | Secretary | 22 Apr 2025 | 9 Jun 2025 | - | - |
| Anthony Swindells | Secretary | 30 Sept 1992 | 2 May 1996 | Uk | - |
| Christopher Frank Sadler | Secretary | 2 May 1996 | 26 Jun 1998 | British | - |
| Christopher Laskey Fidler | Secretary | 6 Sept 2002 | 27 Jul 2007 | British | - |
| Clare Sheridan | Secretary | 27 Jul 2007 | 27 Jun 2024 | British | - |
| Colin Dwight Mackie | Director | 1 Apr 1991 | 19 Nov 1992 | British | 71 years |
| Colin Fellowes | Secretary | 26 Jun 1998 | 22 Mar 1999 | British | - |
| Daniel Terence O'brien | Director | 5 Apr 2000 | 18 May 2005 | British | 79 years |
| David Arthur Johnson | Director | 1 Apr 1991 | 16 Jul 1991 | British | 94 years |
| David Hoyle | Director | 18 May 2005 | 31 Mar 2022 | British | 64 years |
| Evelyn Parkinson | Secretary | 1 Apr 1991 | 30 Sept 1992 | British | - |
| Helen Mary Mason | Secretary | 27 Jun 2024 | 22 Apr 2025 | - | - |
| John Williamson Melville | Director | 2 May 1996 | 26 Jun 1998 | British | 76 years |
| Matthew Ellis Crompton | Director | 5 Apr 2000 | 31 Mar 2022 | British | 64 years |
| Michael John Kelleher | Director | 18 May 2005 | 18 May 2005 | Irish | 56 years |
| Michael John Scott-bolton | Director | 16 Jul 1991 | 1 Apr 2020 | British | 92 years |
| Norman Patrick Turner | Director | 1 Apr 1991 | 2 May 1996 | British | 72 years |
| Raymond Antony Knight | Director | 1 Apr 1991 | 16 Jul 1991 | British | 82 years |
| Raymond Antony Knight | Director | 2 May 1996 | 26 Jun 1998 | British | 82 years |
| Susan Taberner | Secretary | 22 Mar 1999 | 20 Jun 2003 | British | - |
