| Alan James Gow | Director | 20 May 2010 | 18 May 2016 | Australian | 71 years |
| Alasdair Ian Gordon Kennedy | Director | 20 May 2008 | 8 Dec 2010 | British | 81 years |
| Alasdair Ian Gordon Kennedy | Secretary | 30 Sept 1998 | 8 Dec 2010 | British | - |
| Alastair Miller | Director | 20 May 1998 | 9 Jul 1998 | British | 68 years |
| Benjamin Piers Cussons | Director | 20 May 2008 | 19 May 2015 | British | 60 years |
| Benjamin Piers Cussons | Director | 20 Sept 2017 | 17 Jul 2024 | British | 60 years |
| Bernard Stuart Apter | Director | 9 Jul 1998 | 14 May 2002 | British | 91 years |
| Brian Kenneth Mcgivern | Director | 9 Jul 1998 | 14 May 2002 | British | 89 years |
| Christine Ann Gaskell | Director | 3 Jul 2013 | 26 Apr 2023 | British | 67 years |
| Christopher Ellis Moyle | Director | 18 May 2011 | 2 Jul 2019 | British | 80 years |
| Claire Jane Viscountess Mackintosh Of Halifax | Director | 20 May 2010 | 14 Jun 2017 | British | 68 years |
| David John Prosser | Director | 13 May 2003 | 22 May 2012 | British | 82 years |
| David Leslie Wilkinson | Secretary | 8 Dec 2010 | 9 Sept 2013 | - | - |
| David Leslie Wilkinson | Director | 8 Dec 2010 | 9 Sept 2013 | Irish | 73 years |
| David Michael Tucker | Director | 11 May 2005 | 18 May 2011 | British | 84 years |
| Derek Michael Richardson | Director | 8 Jan 1999 | 11 May 2005 | British | 88 years |
| Elizabeth Mary Ann Bishop | Director | 14 Jun 2017 | 19 Jul 2023 | British | 68 years |
| Gordon George Reid Ballard | Director | 14 Jun 2017 | 17 Jul 2024 | British | 67 years |
| Graham Peter White | Director | 18 May 2016 | 19 Jul 2023 | British | 71 years |
| Hilary Margaret Wilson | Director | 10 May 2006 | 22 May 2012 | British | 74 years |
| Ian Gordon Ferrier Mavor | Director | 20 May 1998 | 9 Jul 1998 | British | 85 years |
| Ian Gordon Ferrier Mavor | Secretary | 20 May 1998 | 30 Sept 1998 | British | - |
| James Charles Markwick | Director | 9 Jul 1998 | 12 May 2004 | British | 90 years |
| James Dubois | Director | 17 May 2000 | 10 May 2006 | British | 80 years |
| Jeffery Alexander Spencer Tolman | Director | 9 Jul 1998 | 2 Dec 1998 | British | 76 years |
| John Albert Martin Grant | Director | 12 May 2004 | 20 May 2010 | British | 81 years |
| John Anderson | Director | 9 Jul 1998 | 17 May 2000 | British | 87 years |
| John David Ledgard | Director | 14 May 2002 | 11 May 2005 | British | 79 years |
| John Hunter Maxwell | Director | 12 May 2004 | 20 May 2010 | British | 82 years |
| John Robert Lloyd Berriman | Director | 1 Oct 2021 | 16 Jul 2025 | British | 70 years |
| Karen Margaret England | Secretary | 22 Jun 2021 | 28 Mar 2022 | - | - |
| Kieran Charles Poynter | Director | 9 May 2007 | 22 May 2013 | British | 76 years |
| Laurence James Mutkin | Director | 2 Jul 2019 | 16 Jul 2025 | British | 60 years |
| Michael James Limb | Director | 9 Jul 1998 | 17 May 2000 | British | 93 years |
| Michael John Turner | Director | 10 May 2006 | 18 May 2016 | British | 84 years |
| Miles William Ellis Wade | Secretary | 13 Sept 2013 | 22 Jun 2021 | - | - |
| Nicholas John Joce | Director | 20 May 2008 | 30 Apr 2014 | British | 70 years |
| Peter Graham Bainbridge | Director | 17 May 2000 | 11 May 2006 | British | 80 years |
| Peter Graham Read | Director | 11 Sept 2013 | 31 Mar 2022 | British | 70 years |
| Peter Tyrie | Director | 3 Jul 2013 | 2 Jul 2019 | British | 80 years |
| Philippa Catherine Natalia Cronk | Director | 18 May 2016 | 20 Jul 2022 | British | 47 years |
| Raymond Geoffrey Wiltshire | Director | 9 Jul 1998 | 8 Apr 2002 | British | 90 years |
| Roger Smolski | Director | 14 May 2002 | 20 May 2010 | British | 82 years |
| Ronald David Fox | Director | 22 May 2012 | 12 Jun 2018 | British | 80 years |
| Stephen Keith Hammerton | Director | 14 May 2002 | 20 May 2008 | British | 77 years |
| Stephen Mark Jeffrey Lamport | Director | 22 May 2012 | 12 Jun 2018 | British | 75 years |
| Susan Ann Brownson | Director | 11 May 2005 | 3 May 2013 | British | 85 years |
| Thomas Finlayson Grant Purves | Director | 20 May 2010 | 12 Jun 2018 | British | 78 years |
| Timothy Gordon Keown | Director | 9 Jul 1998 | 9 May 2007 | British | 87 years |