| Alex Wilson | Director | 1 Apr 1999 | 1 Apr 2000 | British | 73 years |
| Anna Olive Magdelene Manz | Director | 29 Nov 2007 | 4 Aug 2010 | British | 53 years |
| Archie Graeme Forrester | Director | 13 Nov 2002 | 29 Mar 2007 | British | 86 years |
| Barry Edward Wickham | Director | 2 Mar 1993 | 27 Feb 1998 | British | 85 years |
| Brian Higgs | Director | 1 Apr 2000 | 29 Mar 2007 | British | 67 years |
| Caroline Sheila Wehrle | Director | 6 Mar 2012 | 30 Nov 2022 | British | 54 years |
| Carolyn Darcy Isaacs | Director | 29 Mar 2007 | 1 Dec 2020 | British | 63 years |
| Catherine Ann Hearn | Director | 1 Apr 2000 | 30 Jun 2002 | British | 69 years |
| Catherine Beris James | Director | 13 Nov 2002 | 1 Dec 2020 | British | 72 years |
| Charles Dawson Coase | Director | 12 Jul 2005 | 1 Dec 2021 | British | 66 years |
| Christine Cayzer | Director | 21 Apr 1994 | 1 Jan 1998 | British | 73 years |
| Christopher John Callanan | Director | 25 Nov 2014 | 30 Sept 2016 | British | 44 years |
| Christopher John Pooley | Director | 2 Mar 1993 | 31 Mar 1999 | British | 85 years |
| David Allen Grace | Director | 22 Mar 1993 | 16 Nov 1993 | British | 77 years |
| David Earl Light | Director | 2 Aug 2011 | 30 Jun 2016 | British | 61 years |
| David Edward Tagg | Director | 2 Mar 1993 | 31 Mar 1999 | British | 86 years |
| David Heginbottom | Director | 13 Oct 2010 | 30 Sept 2020 | British | 56 years |
| David Michael Hillier | Director | 2 Mar 1993 | 31 Dec 1993 | British | 77 years |
| David Tennent | Director | 29 Mar 2007 | 2 Jul 2010 | British | 58 years |
| David Wells | Director | 25 Nov 2014 | 19 Jan 2015 | British | 55 years |
| Dennis William Ward | Director | 20 Jan 1997 | 29 Jul 2003 | British | 93 years |
| Eimear Murtagh Lysaght | Director | 6 Mar 2012 | 29 Apr 2014 | Irish | 50 years |
| Elizabeth Glynis Paxton | Director | 29 Mar 2007 | 1 Dec 2020 | British | 73 years |
| Elizabeth Jane Hattersley | Director | 12 Jul 2005 | 29 Mar 2007 | British | 66 years |
| Elsie Rollinson | Director | 1 Apr 2000 | 1 Apr 2003 | British | 72 years |
| Gareth Williams | Director | 12 Oct 1999 | 4 Mar 2014 | British | 73 years |
| Graham Logie | Director | 10 Jul 2002 | 1 Mar 2011 | British | 71 years |
| Ian Campbell Shaw | Director | 30 Jul 2003 | 1 Dec 2020 | British | 81 years |
| Ian David Neil Paterson | Director | 2 Mar 1993 | 10 Jul 2002 | British | 77 years |
| Ian Reid Mcmahon | Director | 1 Mar 1996 | 31 Oct 1996 | British | 74 years |
| James Donaldson | Director | 21 Nov 2017 | 27 Sept 2022 | British | 64 years |
| James Eugene Collins | Director | 1 Apr 1999 | 13 Nov 2002 | British | 74 years |
| James Rankine Effingham | Director | 17 Aug 1994 | 31 Mar 1999 | British | 83 years |
| James William Winning Mcghee | Director | 1 Mar 2011 | 21 Nov 2017 | British | 70 years |
| Joan Florence Wells | Director | 2 Mar 1994 | 31 Dec 1996 | British | 99 years |
| John Burrell | Director | 24 May 1993 | 1 Apr 2000 | British | 78 years |
| John Hugh Shipstone Shippam | Director | 1 Oct 1995 | 31 Dec 1997 | British | 81 years |
| John James Nicholls | Secretary | 30 Jul 2003 | 21 Mar 2018 | British | - |
| John Michael Summerlin | Director | 20 Jan 1997 | 30 Jun 2003 | British | 74 years |
| Maria Jimena Hatchman | Director | 5 Aug 2014 | 26 Nov 2019 | British | 44 years |
| Mark David Peters | Secretary | 1 Apr 1999 | 10 Nov 2000 | British | - |
| Martijn Van Buuren | Director | 29 Nov 2007 | 5 Aug 2014 | Dutch | 68 years |
| Michael Alfred Coombe | Secretary | 2 Mar 1993 | 15 Nov 1995 | British | - |
| Michael Garwood Delahooke | Director | 2 Mar 1993 | 31 Dec 1995 | British | 91 years |
| Nicholas Charles Rose | Director | 21 Mar 1994 | 31 Mar 1999 | British | 69 years |
| Nigel John Hunter | Director | 22 Mar 1993 | 30 Jun 1995 | British | 74 years |
| Patrick James Almond | Director | 13 Nov 2002 | 29 Mar 2007 | British | 61 years |
| Philip Edward Yea | Director | 1 Apr 1999 | 12 Oct 1999 | British | 72 years |
| Phillip Keague Bentley | Director | 31 Dec 1997 | 31 Oct 2000 | British | 67 years |
| Ralph Allardyce Balfour | Director | 1 Apr 1999 | 10 Jul 2002 | British | 81 years |
| Raymond James Joy | Director | 30 Jan 2001 | 31 Jan 2007 | British | 72 years |
| Richard John Raggett | Secretary | 15 Nov 1995 | 30 Mar 1998 | British | - |
| Robert Charles Lowes | Director | 2 Mar 1993 | 21 Mar 1994 | American | 81 years |
| Robert Joseph Moore | Director | 1 Jul 2003 | 7 Mar 2005 | American | 65 years |
| Robert Oswald John Strong | Director | 19 Jan 1998 | 31 Mar 1999 | British | 100 years |
| Robin James Brockwitz | Director | 1 Apr 2003 | 1 Nov 2011 | British | 70 years |
| Robin Warner Stanwell Roads | Director | 30 Mar 1998 | 31 Mar 1998 | British | 86 years |
| Robin Warner Stanwell Roads | Secretary | 30 Mar 1998 | 31 Mar 1999 | British | - |
| Roderick Alexander Shand Sivewright | Director | 10 Jul 2002 | 6 Mar 2012 | British | 75 years |
| Roger Hugh Myddelton | Director | 2 Mar 1993 | 16 Nov 1993 | British | 84 years |
| Roger Hugh Myddelton | Director | 1 Mar 1998 | 30 Jun 2003 | British | 84 years |
| Roger Smart | Director | 2 Mar 1993 | 16 Nov 1993 | British | 81 years |
| Roy James Spence | Director | 1 Mar 1996 | 31 Mar 1999 | British | 86 years |
| Sharon Lynnette Fennessy | Director | 5 Aug 2014 | 1 Dec 2021 | Irish | 59 years |
| Stuart Purves Miller | Director | 22 Mar 1993 | 31 Dec 1995 | British | 77 years |
| Susanne Margaret Bunn | Secretary | 10 Nov 2000 | 30 Jul 2003 | British | - |
| Turnbull Hutton | Director | 1 Apr 1999 | 1 Apr 2000 | British | 80 years |
| Wendy Elizabeth Dickson | Director | 30 Jul 2003 | 7 Mar 2005 | British | 55 years |
| William Lawrence Hampton | Director | 1 Apr 1999 | 13 Nov 2002 | British | 92 years |