| Alan David Garner | Director | 2 Feb 1998 | 2 Apr 2001 | British | 76 years |
| Amanda Lucia Fisher | Director | 12 Sept 2017 | 15 Jan 2020 | British | 63 years |
| Andrew Lee Milner | Director | 13 Mar 2015 | 12 Dec 2019 | British | 57 years |
| Ann Elizabeth Mantz | Secretary | 3 Dec 1991 | 4 Feb 2000 | British | - |
| Barry Eric Evans | Director | 28 Feb 1996 | 24 Jan 1997 | British | 83 years |
| Brian Lynn Staples | Director | 13 Feb 1998 | 28 Feb 2003 | British | 81 years |
| Carol Hui | Secretary | 18 Sept 2000 | 30 Nov 2005 | British | - |
| Charles Michael Mogg | Director | 27 Apr 2000 | 3 Sept 2003 | British | 81 years |
| Christopher Charles Webster | Director | 12 May 2008 | 11 Apr 2010 | British | 68 years |
| Christopher Victor Fenton | Director | 21 Jul 2006 | 12 May 2008 | British | 64 years |
| Christopher Victor Fenton | Director | 13 Jul 2010 | 31 Oct 2012 | British | 64 years |
| Daniel Lawrence Holland | Director | 13 Mar 2015 | 31 Dec 2016 | British | 54 years |
| David Alwyn Cawthorne | Director | 3 Dec 1991 | 1 Jan 1996 | British | 82 years |
| David John Miller | Director | 2 Nov 1998 | 10 Sept 2002 | British | 64 years |
| Edmund Alec King | Director | 3 Dec 1991 | 13 Feb 1998 | British | 90 years |
| Eric Roy Turtle | Director | 3 Dec 1991 | 28 Feb 1997 | British | 85 years |
| Gillian Duggan | Director | 18 Nov 2008 | 30 Apr 2016 | British | 59 years |
| Gillian Laura Carter | Director | 24 Nov 1999 | 20 Dec 2001 | British | 62 years |
| Graham Carvell Love | Director | 24 Nov 1999 | 28 Jul 2000 | British | 72 years |
| Guy Richard Wakeley | Director | 12 May 2008 | 26 Sept 2008 | British | 56 years |
| Howard Raymond Gatehouse | Director | 24 Nov 1999 | 30 Apr 2001 | British | 68 years |
| Ian Smith Fletcher | Director | 1 Jan 1996 | 14 Oct 1996 | British | 81 years |
| John Frederick Graveling | Director | 26 Jun 1994 | 30 Jun 1999 | British | 84 years |
| John Hamilton Robinson | Director | 20 Dec 2001 | 30 Sept 2002 | American | 76 years |
| John Richard Tetlow | Secretary | 9 Feb 2000 | 18 Sept 2000 | British | - |
| John Watson Teasdale Snowdon | Director | 18 Mar 1999 | 18 Nov 1999 | British | 78 years |
| Jose Leo | Director | 3 Sept 2003 | 22 Sept 2006 | Spanish | 66 years |
| Melvyn Ewell | Director | 20 Dec 2001 | 31 Mar 2016 | British | 68 years |
| Michael Arthur Kayser | Director | 11 Sept 2002 | 15 Oct 2002 | British | 71 years |
| Michael Pilbeam | Director | 2 Nov 1998 | 28 Feb 2001 | British | 77 years |
| Michael Rumball | Director | 3 Dec 1991 | 26 Jan 1995 | British | 94 years |
| Neil Ashley | Director | 3 Dec 1991 | 7 Oct 1998 | British | 90 years |
| Nicholas Andrew Sharman | Director | 12 Mar 2008 | 31 Mar 2010 | British | 52 years |
| Nicholas Mark Gregg | Director | 13 Mar 2015 | 31 May 2016 | British | 63 years |
| Nigel John James | Director | 19 Feb 1997 | 18 Nov 1999 | British | 77 years |
| Richard Colin Douglas | Director | 3 Dec 1991 | 1 Jan 1996 | British | 87 years |
| Richard James Ward | Director | 27 Jul 2016 | 31 Jan 2023 | British | 49 years |
| Richard Jonathon Crompton Maw | Director | 14 Oct 1996 | 31 Aug 1999 | British | 72 years |
| Richard William Entwistle | Director | 20 Dec 2001 | 30 Jun 2005 | British | 73 years |
| Robert Charles Osborne | Director | 21 Dec 2001 | 19 Jul 2002 | British | 65 years |
| Simon John Hall | Director | 1 May 2001 | 20 Dec 2001 | British | 71 years |
| Simon John Hall | Director | 3 Sept 2003 | 30 Sept 2005 | British | 71 years |
| William Alexander Latto | Director | 14 Nov 1994 | 30 Oct 1998 | British | 82 years |