| Alan Arthur | Director | 26 Jun 1998 | 16 May 2001 | British | 82 years |
| Albert John Everest | Director | 12 Apr 1992 | 9 Mar 1994 | British | 100 years |
| Alexander Small | Director | 1 Dec 2021 | 10 Dec 2024 | British | 63 years |
| Bernadette Clare Young | Secretary | 24 Apr 1997 | 17 Mar 2000 | British | - |
| Brian Arthur Wright | Director | 12 Apr 1992 | 20 Jul 1992 | British | 96 years |
| Brian Thomas Pennicott | Director | 11 May 1995 | 7 Apr 1998 | British | 88 years |
| Christopher Peverell Roger Marley | Director | 27 Jun 1997 | 25 Jun 1999 | British | 78 years |
| Colin Douglas Short | Director | 9 Jun 2010 | 6 Dec 2011 | British | 67 years |
| Colin King | Director | 12 Apr 1992 | 31 May 1992 | British | 94 years |
| David Blyth Morris | Director | 1 Oct 2014 | 30 Sept 2015 | British | 74 years |
| David Gregson Smith | Director | 29 Aug 2001 | 20 May 2004 | United Kingdom | 64 years |
| David James Miller | Director | 12 Apr 1992 | 22 Oct 1999 | British | 74 years |
| David John Peter Uren | Director | 27 Jun 1997 | 20 Mar 2003 | British | 84 years |
| David Norman Roberts | Director | 25 Jun 1999 | 5 Sept 2007 | British | 67 years |
| David Sidney Mccallum | Director | 14 Nov 2002 | 31 Aug 2004 | British | 73 years |
| Deryl Patrick Tandy | Director | 16 Mar 1994 | 26 Jun 1998 | British | 94 years |
| Eric George Coward | Director | 12 Apr 1992 | 30 Jun 1992 | British | 94 years |
| Eric Roland Wills | Secretary | 12 Apr 1992 | 23 Apr 1997 | British | - |
| Geoffrey Clifton Chamberlin | Director | 12 Apr 1992 | 27 Jun 1997 | British | 80 years |
| Hayley Robinson | Director | 3 Feb 2005 | 31 Mar 2008 | British | 64 years |
| Helen Chrystal Hatchek | Director | 1 Nov 2019 | 27 Mar 2024 | British | 70 years |
| Humphrey Michael Tomlinson | Director | 22 Oct 1999 | 23 Jan 2003 | British | 64 years |
| Iain Michael Robson | Director | 29 Aug 2001 | 6 Apr 2023 | British | 67 years |
| Ian Adam Craston | Director | 1 Aug 2022 | 20 Jun 2023 | British | 60 years |
| Jacqueline Elizabeth Fox | Secretary | 15 Jul 2002 | 9 Dec 2005 | British | - |
| Jan Victor Miller | Secretary | 9 May 2002 | 15 Jul 2002 | British | - |
| Jayne Quinn | Director | 10 Jun 1993 | 21 Mar 1997 | British | 70 years |
| Jennifer Ann Margetts | Director | 12 Apr 1992 | 10 Jun 1993 | British | 68 years |
| John Arthur Handley Kydd | Director | 20 Jun 2002 | 8 Jun 2010 | British | 76 years |
| John Ashton | Director | 1 Oct 2014 | 1 Aug 2022 | British | 66 years |
| John Rodney Kent Connold | Director | 27 Jun 1997 | 25 Jun 1999 | British | 82 years |
| Kenneth Desmond Sinfield | Director | 1 Jun 1992 | 4 Jul 2000 | British | 80 years |
| Laurence Alex Freeman | Director | 12 Apr 1992 | 26 Jun 1998 | British | 84 years |
| Malcolm John Simpson | Director | 24 Jul 2003 | 31 Dec 2006 | British | 67 years |
| Michael Charles Evans | Director | 26 Jun 1998 | 20 Jun 2002 | British | 73 years |
| Michael John Hall | Director | 6 Dec 2011 | 11 Dec 2019 | British | 80 years |
| Neil Leonard Hallett | Director | 2 Dec 2010 | 8 Dec 2016 | British | 74 years |
| Nick Criticos | Director | 26 Jun 1998 | 1 Jul 2002 | British | 68 years |
| Peter David Webster | Director | 3 Feb 2005 | 19 Sept 2019 | British | 75 years |
| Peter Edwin Croucher | Director | 1 Jul 1992 | 17 Jan 2002 | British | 84 years |
| Peter Edwin Croucher | Director | 20 Jun 2002 | 8 Jun 2010 | British | 84 years |
| Peter Francis Foreman | Director | 17 Jun 1994 | 1 Oct 1998 | British | 83 years |
| Peter Francis Foreman | Secretary | 17 Jun 1994 | 12 Apr 1995 | British | - |
| Peter Graham Taylor | Director | 18 Mar 1994 | 6 Feb 1998 | British | 87 years |
| Peter Stuart Graham-matheson | Director | 12 Apr 1992 | 11 May 1995 | British | 86 years |
| Raymond Charles Cox | Director | 20 May 2004 | 5 Sept 2007 | British | 68 years |
| Richard Arthur Pointer | Director | 25 Jun 1999 | 23 Jun 2000 | British | 79 years |
| Robert Alexander Murtagh | Director | 10 Mar 2011 | 30 Sept 2014 | British | 67 years |
| Robert Alexander Murtagh | Director | 3 Dec 2015 | 9 Dec 2021 | British | 67 years |
| Rodney James Freeman | Director | 28 Jun 1996 | 27 Jun 1997 | British | 84 years |
| Roger Albert Gartside Neville | Director | 12 Apr 1992 | 18 Mar 1994 | British | 95 years |
| Roger John Taylor | Director | 20 Jul 1992 | 17 Jun 1994 | British | 85 years |
| Rosemary Cross | Director | 23 Jun 2000 | 5 Sept 2007 | British | 76 years |
| Sarah Anne Herbert | Director | 5 Sept 2007 | 30 Sept 2015 | British | 66 years |
| Shriyesh Patel | Director | 11 Dec 2019 | 26 Aug 2021 | British | 65 years |
| Stanley Locksley Smaller | Director | 26 Jun 1998 | 20 Jun 2002 | British | 95 years |
| Stephen James Cullen | Director | 31 Dec 2006 | 5 Sept 2007 | British | 67 years |
| Stephen William Broughton | Director | 2 Mar 2001 | 9 Mar 2011 | British | 79 years |
| Terence Wills | Director | 12 Apr 1992 | 28 Jun 1996 | British | 79 years |
| Thomas Arthur Hayes | Director | 6 Feb 1998 | 30 Jun 2001 | British | 83 years |
| Thomas Scott Nelson | Director | 12 Apr 1992 | 5 Mar 1998 | British | 87 years |
| Vanessa Jones | Secretary | 23 Jun 2000 | 26 Apr 2002 | British | - |
| Victoria Spence | Director | 1 Apr 2008 | 8 Dec 2009 | British | 58 years |