| Adam Paul Rutherford | Secretary | 12 Oct 1995 | 14 Jan 2000 | British | - |
| Angela Sigley | Secretary | 14 Jan 2000 | 18 Apr 2000 | British | - |
| Anthony John Ashplant | Director | 19 Jun 2000 | 23 Mar 2016 | British | 72 years |
| Chantal Marie-claire Waight | Director | 4 Mar 2021 | 19 Dec 2022 | British | 50 years |
| Corina Katherine Ross | Secretary | 1 Jun 1993 | 12 Oct 1995 | British | - |
| David George Green | Director | 1 Sept 1997 | 19 Feb 2001 | British | 76 years |
| David Kenneth Watson | Director | 30 Sept 1999 | 8 May 2000 | British | 67 years |
| David Kenneth Watson | Director | 10 Jan 2002 | 25 Feb 2003 | British | 67 years |
| Derek John Councell | Director | 1 Jun 1993 | 8 May 1998 | British | 89 years |
| Fiona Jane Molloy | Secretary | 25 Jul 2002 | 13 Jan 2006 | British | - |
| Huw Martin Jones | Director | 15 Jul 1993 | 29 Apr 2016 | British | 78 years |
| John Michael Page | Director | 26 Feb 2009 | 2 Sept 2020 | British | 55 years |
| Jonathan Peter Mcclelland | Director | 17 Aug 2001 | 7 Sept 2018 | British | 63 years |
| Jonathan Peter Mcclelland | Secretary | 19 Feb 2001 | 25 Jul 2002 | British | - |
| Kerryn Lynn Macdonald | Secretary | 30 Apr 2004 | 9 Mar 2005 | British | - |
| Margaret Mary Ammon | Director | 15 Aug 2018 | 20 Dec 2019 | British | 59 years |
| Michael John Lawrence | Director | 1 Jun 1992 | 1 Jun 1993 | British | 83 years |
| Mukesh Keshavji Shah | Director | 26 Jan 1995 | 30 Nov 1998 | British | 70 years |
| Peerr Martin Maynard | Director | 27 Apr 1998 | 30 Jun 1998 | British | 74 years |
| Peter Robert Rawson | Director | 1 Jun 1992 | 1 Sept 1997 | British | 83 years |
| Robert Walker | Secretary | 18 Apr 2000 | 19 Feb 2001 | British | - |
| Simon Henry Faure | Director | 12 May 2020 | 30 Nov 2020 | British | 51 years |
| Simon Humphrey Westland Pilcher | Director | 25 Feb 2003 | 1 Apr 2019 | British | 60 years |
| Stephen James Cook | Director | 16 Jul 1998 | 30 Jul 1999 | British | 75 years |
| William Nicoll | Director | 18 Mar 2019 | 31 Mar 2023 | British | 57 years |