| Alan James Harris Stewart | Director | 28 Oct 2010 | 10 Jul 2014 | British | 66 years |
| Alan James Mcwalter | Director | 1 Jan 2000 | 10 Jul 2002 | British | 73 years |
| Alan Keith Patrick Smith | Director | 26 Jul 1992 | 31 Mar 1993 | British | 85 years |
| Alison Clare Reed | Director | 11 Jul 2001 | 30 Apr 2005 | British | 70 years |
| Amanda Mellor | Secretary | 30 Jul 2009 | 1 Feb 2019 | British | - |
| Amanda Mellor | Director | 17 Jul 2009 | 1 Feb 2019 | British | 62 years |
| Andrew Zeliq Stone | Director | 26 Jul 1992 | 31 Dec 1999 | British | 84 years |
| Anthony Frank Elliott Ball | Director | 1 Sept 2000 | 27 Mar 2002 | British | 71 years |
| Barry Simon Morris | Director | 4 Apr 1994 | 19 Jul 2000 | British | 79 years |
| Brian Ford Baldock | Director | 1 Oct 1996 | 27 Mar 2002 | British | 92 years |
| Charles Wilson | Director | 31 May 2004 | 28 Oct 2005 | British | 61 years |
| Christopher Littmoden | Director | 26 Jul 1992 | 31 May 1999 | British | 83 years |
| Clara Elizabeth Mary Freeman | Director | 1 Jan 1996 | 18 Sept 2000 | British | 74 years |
| Clinton Vita Silver | Director | 26 Jul 1992 | 31 Jul 1994 | British | 97 years |
| David Daniel Sieff | Director | 26 Jul 1992 | 11 Jul 2001 | British | 87 years |
| David John Eyre | Director | 30 Oct 1997 | 30 Oct 1997 | British | 78 years |
| David Reuben Susman | Director | 26 Jul 1992 | 31 Jul 1993 | S African | 101 years |
| David Reuben Susman | Director | 26 Jul 1993 | 26 Jul 1994 | S African | 101 years |
| David Ronald Norgrove | Director | 18 Sept 2000 | 31 Mar 2004 | British | 78 years |
| David Valentine Atterton | Director | 26 Jul 1992 | 26 Jul 1993 | British | 99 years |
| Denis George Lanigan | Director | 26 Jul 1992 | 17 Jul 1997 | British | 100 years |
| Derek Keith Hayes | Director | 4 Apr 1994 | 31 May 1999 | British | 78 years |
| Donald George Trangmar | Director | 26 Jul 1992 | 31 Mar 1998 | British | 87 years |
| Eoin Philip Tonge | Director | 26 Jun 2020 | 19 Jan 2023 | Irish | 54 years |
| Graham John Oakley | Director | 27 Mar 2002 | 31 Jul 2009 | British | 70 years |
| Graham John Oakley | Secretary | 1 Aug 1997 | 30 Jul 2009 | British | - |
| Helen Alison Weir | Director | 1 Apr 2015 | 31 Mar 2018 | British | 64 years |
| Humphrey Stewart Morgan Singer | Director | 10 Aug 2018 | 31 Dec 2019 | British | 61 years |
| Ian Dyson | Director | 27 Jun 2005 | 14 Jul 2010 | British | 64 years |
| James Richard Benfield | Director | 1 Jan 1993 | 31 Dec 1999 | British | 77 years |
| Janet Mary Young | Director | 26 Jul 1992 | 17 Jul 1997 | British | 100 years |
| Jeremy Charles Douglas Townsend | Director | 19 Jan 2023 | 21 May 2025 | British | 62 years |
| John Anderson Lusher | Director | 26 Jul 1992 | 31 Dec 1992 | British | 93 years |
| John Keith Oates | Director | 26 Jul 1992 | 31 Jan 1999 | British | 84 years |
| John Kevin Lomax | Director | 1 Sept 2000 | 27 Mar 2002 | British | 78 years |
| John Michael Joseph Keenan | Director | 1 Sept 2001 | 27 Mar 2002 | American | 90 years |
| John O'neill | Secretary | 26 Jul 1992 | 31 Jul 1997 | British | - |
| John William Dixon | Director | 16 Oct 2013 | 22 Jul 2015 | British | 58 years |
| Joseph Thomas Rowe | Director | 1 Jan 1993 | 19 Jul 2000 | British | 79 years |
| Justin Matthew King | Director | 1 Sept 2002 | 19 Nov 2003 | British | 65 years |
| Laurel Claire Powers-freeling | Director | 6 Nov 2001 | 9 Nov 2004 | British | 69 years |
| Luc Emile Vandevelde | Director | 28 Feb 2000 | 31 May 2004 | Belgian | 75 years |
| Marc Bolland | Director | 14 Jul 2010 | 16 Mar 2016 | Dutch | 67 years |
| Mark David Mckeon | Director | 5 Apr 2004 | 9 Nov 2004 | British | 68 years |
| Martin Wakefield Jacomb | Director | 26 Jul 1992 | 19 Jul 2000 | British | 97 years |
| Maurice Harold Helfgott | Director | 19 Nov 2003 | 9 Nov 2004 | British | 59 years |
| Michael Sydney Perry | Director | 1 Oct 1996 | 11 Jul 2001 | British | 92 years |
| Nigel Lawrence Colne | Director | 26 Jul 1992 | 31 Mar 1997 | British | 86 years |
| Paul Peter Douglas Smith | Director | 26 Jul 1992 | 31 Mar 1999 | British | 86 years |
| Peter Leslie Salsbury | Director | 26 Jul 1992 | 18 Sept 2000 | British | 77 years |
| Philip Guy Mccracken | Director | 26 Jul 1992 | 18 Sept 2000 | British | 78 years |
| Ralph Harry Robins | Director | 26 Jul 1993 | 11 Jul 2001 | British | 94 years |
| Richard Greenbury | Director | 26 Jul 1992 | 22 Jun 1999 | British | 90 years |
| Robert William Chaigneau Colvill | Director | 26 Jul 1992 | 31 Dec 2001 | British | 86 years |
| Roger Aldridge | Director | 1 Jan 1993 | 19 Jul 2000 | British | 79 years |
| Roger Anthony Holmes | Director | 1 Jan 2001 | 31 May 2004 | British | 66 years |
| Scilla Grimble | Director | 31 Mar 2018 | 12 Sept 2018 | British | 53 years |
| Simon John Sacher | Director | 26 Jul 1992 | 31 May 1999 | British | 86 years |
| Stella Rimington | Director | 1 Jan 1997 | 27 Mar 2002 | British | 91 years |
| Stephen Joseph Rowe | Director | 17 Jul 2015 | 25 May 2022 | British | 59 years |
| Steven Michael Sharp | Director | 15 Dec 2005 | 19 Aug 2013 | British | 76 years |
| Stuart Alan Ransom Rose | Director | 31 May 2004 | 31 Jul 2010 | British | 77 years |
| Vittorio Radice | Director | 3 Mar 2003 | 9 Jun 2004 | Italian | 69 years |