| Alastair Couper | Director | 31 Dec 2002 | 20 Jun 2003 | British | 64 years |
| Alison Leonie Stevenson | Director | 16 Aug 2011 | 12 Sept 2014 | British And South African | 49 years |
| Andrew Tadeusz Jurenko | Director | 2 Sept 1991 | 4 Jan 1994 | British | 76 years |
| Bob Kievits | Director | 9 Mar 1998 | 20 Nov 2000 | Dutch | 71 years |
| Brian Hugh Ricketts | Director | 4 Jan 1994 | 8 Dec 1994 | British | 83 years |
| Christopher Michael Devaney | Director | 25 Mar 2024 | 13 Jan 2025 | British | 38 years |
| Craig Allan Gibson Smyth | Director | 20 Nov 2000 | 31 Dec 2002 | British | 59 years |
| David Alastair Trollope | Director | 12 Sept 2014 | 25 Mar 2024 | British | 66 years |
| Desmond Stephen Vertannes | Director | 20 Nov 2000 | 1 Aug 2003 | British | 75 years |
| George Gordon Edington | Director | 16 Jul 1991 | 8 Dec 1994 | British | 81 years |
| Giles Robert Bryant Wilson | Director | 15 Apr 2011 | 16 Aug 2011 | British | 53 years |
| Gordon Robert Foster | Director | 16 Jul 1991 | 8 Dec 1994 | British | 71 years |
| Gordon Robert Foster | Director | 6 Oct 2000 | 20 Nov 2000 | British | 71 years |
| Ian Michael Smith | Director | 16 Jul 1991 | 29 Feb 1996 | British | 71 years |
| James Mark Cross | Director | 30 Nov 2007 | 30 Oct 2010 | British | 67 years |
| John Barry Sowton | Director | 1 Jun 1994 | 8 Dec 1994 | British | 63 years |
| John Barry Sowton | Secretary | 14 Jul 1995 | 17 Oct 1995 | British | - |
| John Francis Alexander Geddes | Secretary | 24 Jan 2005 | 1 Oct 2006 | British | - |
| John Joseph Callaghan | Director | 8 Dec 1994 | 9 Mar 1998 | British | 88 years |
| John Joseph Redmond | Director | 20 Jun 2003 | 14 Jul 2008 | Irish | 58 years |
| John Julian Stent | Director | 16 Jul 1991 | 2 Sept 1991 | British | 71 years |
| John O'brien | Director | 31 Dec 2002 | 17 Oct 2003 | British | 68 years |
| Jonathon Cook | Director | 15 Oct 2007 | 30 Nov 2007 | British | 49 years |
| Matthew Brook Mccreath | Director | 30 Mar 2016 | 1 Apr 2021 | British | 48 years |
| Mervyn Walker | Director | 1 Aug 2003 | 10 May 2007 | Irish | 66 years |
| Michael Douglas Whiddett | Secretary | 8 Dec 1994 | 14 Jul 1995 | British | - |
| Michael Terry Saggers | Secretary | 5 Nov 1998 | 1 Oct 1999 | British | - |
| Paul Robert Instone | Secretary | 1 Oct 1999 | 20 Nov 2000 | British | - |
| Peter Allen | Director | 8 Dec 1994 | 20 Nov 2000 | Us Citizen | 90 years |
| Peter John Humphrey | Director | 30 Nov 2007 | 30 Mar 2016 | British | 66 years |
| Peter Simon Smith | Director | 20 Nov 2000 | 31 Dec 2002 | British | 82 years |
| Philip Harnden | Secretary | 20 Nov 2000 | 24 Jan 2005 | British | - |
| Rachel Rowson | Secretary | 16 Jul 1991 | 8 Dec 1994 | British | - |
| Randeep Singh Sagoo | Director | 13 Dec 2010 | 15 Apr 2011 | British | 55 years |
| Richard Alexander Hepburn | Director | 31 Dec 2002 | 1 Aug 2003 | British | 63 years |
| Richard Kevin Smith | Director | 2 Dec 1991 | 31 Jan 1994 | British | 66 years |
| Robert Mauro Digia | Director | 8 Dec 1994 | 20 May 1999 | American | 102 years |
| Tristan George Turnbull | Director | 10 May 2007 | 15 Oct 2007 | British | 55 years |
| Tristan George Turnbull | Secretary | 1 Oct 2006 | 4 Sept 2020 | British | - |
| William John Metzger | Director | 22 Dec 1999 | 20 Nov 2000 | American | 68 years |
| Yvonne Susan Walker | Secretary | 17 Oct 1995 | 5 Nov 1998 | British | - |
| Yvonne Susan Walker | Secretary | 12 Oct 2000 | 20 Nov 2000 | British | - |