| Alan James Belfield | Director | 1 Apr 2006 | 31 Mar 2024 | British | 70 years |
| Andrew Ka Ching Chan | Director | 1 Apr 1998 | 30 Sept 2001 | British | 77 years |
| Andrew Ka Ching Chan | Director | 1 Oct 2001 | 31 Mar 2014 | British | 77 years |
| Andrew Simon Howard | Director | 1 Apr 2021 | 31 Mar 2025 | British | 62 years |
| Andrew Turnbull | Director | 1 Apr 2006 | 6 Jun 2007 | British | 81 years |
| Anthony James Fitzpatrick | Director | 1 Apr 1994 | 30 Sept 2001 | British | 75 years |
| Anthony James Fitzpatrick | Director | 1 Oct 2001 | 26 Jul 2003 | British | 75 years |
| Anthony John Marriott | Director | 27 Nov 1992 | 31 Mar 1996 | British | 88 years |
| Cecil Hugh Ignatius Balmond | Director | 1 Apr 1998 | 30 Sept 2001 | British | 83 years |
| Cecil Hugh Ignatius Balmond | Director | 1 Oct 2001 | 31 Mar 2007 | British | 83 years |
| Charles Thomas Barker | Director | 27 Nov 1992 | 31 Mar 1998 | British | 90 years |
| David Arthur Whittleton | Director | 1 Apr 1998 | 30 Sept 2001 | British | 75 years |
| David Arthur Whittleton | Director | 1 Oct 2001 | 31 Mar 2017 | British | 75 years |
| David John Singleton | Director | 1 Oct 2001 | 31 Mar 2011 | British | 76 years |
| Dervilla Mary Mitchell | Director | 1 Apr 2014 | 31 Mar 2024 | Irish | 68 years |
| Donald Mackay Ferguson | Director | 27 Nov 1992 | 31 Oct 1994 | British | 86 years |
| Duncan Michael | Director | 27 Nov 1992 | 30 Sept 2001 | British | 89 years |
| Eva Maria Hinkers | Director | 1 Apr 2021 | 31 Mar 2025 | German | 63 years |
| Frederick George Ernest Irwin | Director | 27 Nov 1992 | 31 Mar 1996 | British | 93 years |
| Genevieve Shore | Director | 1 Jan 2017 | 30 Jun 2019 | British | 57 years |
| Gregory Scott Hodkinson | Director | 1 Sept 2007 | 31 Mar 2019 | Australian | 71 years |
| Isabel Dedring | Director | 1 Apr 2019 | 31 Mar 2025 | American | 55 years |
| James Richard Cowell | Director | 1 Apr 1998 | 30 Sept 2001 | British | 82 years |
| James Richard Cowell | Director | 1 Oct 2001 | 10 Nov 2006 | British | 82 years |
| Jennifer Baster | Director | 1 Nov 2009 | 31 Mar 2013 | British | 77 years |
| John Charles Miles | Director | 1 Apr 1994 | 30 Sept 2001 | British | 75 years |
| John Charles Miles | Director | 1 Oct 2001 | 31 Mar 2011 | British | 75 years |
| John Douglas Harvey | Director | 1 Apr 1998 | 30 Sept 2001 | British | 82 years |
| John Douglas Harvey | Director | 1 Oct 2001 | 31 Mar 2004 | British | 82 years |
| John Neville Martin | Director | 27 Nov 1992 | 31 Mar 1995 | British | 94 years |
| Jorgen Nissen | Director | 27 Nov 1992 | 31 Mar 1998 | Danish | 91 years |
| Lup Moon Lui | Director | 1 Sept 2007 | 31 Mar 2017 | British | 74 years |
| Mahadev Raman | Director | 1 Sept 2007 | 31 Mar 2017 | American | 69 years |
| Martyn Arthur Stroud | Director | 1 Apr 1994 | 30 Sept 2001 | British | 83 years |
| Matthew Stuart Tweedie | Director | 1 Apr 2017 | 30 Sept 2019 | British | 55 years |
| Michael David Bear | Director | 1 Oct 2009 | 30 Sept 2015 | British | 73 years |
| Michael David Peter Sargent | Director | 27 Nov 1992 | 30 Sept 2001 | British | 87 years |
| Michael John Somers | Secretary | 1 Apr 2001 | 31 Mar 2007 | British | - |
| Michael Ka-yue Kwok | Director | 1 Apr 2011 | 31 Mar 2023 | British | 64 years |
| Michael Shears | Director | 27 Nov 1992 | 31 Mar 2004 | British | 86 years |
| Ngaire Tui Woods | Director | 1 Jan 2011 | 31 Dec 2016 | Uk/new Zealand | 63 years |
| Nigel Cooper Thompson | Director | 27 Nov 1992 | 31 Mar 1996 | British | 87 years |
| Paul Anthony Coughlan | Director | 1 Apr 2019 | 31 Mar 2025 | Irish | 61 years |
| Peter Anthony Bailey | Director | 1 Apr 2012 | 31 Mar 2019 | Australian | 66 years |
| Peter Geoffrey Ayres | Director | 1 Apr 1998 | 30 Sept 2001 | British | 83 years |
| Peter Geoffrey Ayres | Director | 1 Oct 2001 | 31 Mar 2004 | British | 83 years |
| Peter John Chamley | Director | 1 Apr 2014 | 31 Mar 2021 | British | 70 years |
| Peter Langford | Director | 1 Apr 1999 | 30 Sept 2001 | British | 84 years |
| Philip Graham Dilley | Director | 1 Apr 2006 | 31 Mar 2014 | British | 71 years |
| Richard Baskcomb Haryott | Director | 27 Nov 1992 | 30 Sept 2001 | British | 85 years |
| Robert Frank Care | Director | 1 Sept 2007 | 31 Mar 2014 | Australian | 76 years |
| Robert Frank Emmerson | Director | 27 Nov 1992 | 31 Mar 2004 | British | 88 years |
| Stuart Leonard Irons | Secretary | 27 Nov 1992 | 31 Mar 2001 | British | - |
| Terence Malcolm Hill | Director | 1 Oct 2001 | 31 Mar 2009 | British | 78 years |
| Thomas John Fergal Whyte | Director | 1 Apr 2017 | 31 Mar 2025 | Irish | 58 years |
| Timothy John Stone | Director | 19 Nov 2015 | 31 Mar 2023 | British | 75 years |
| Tristram George Allen Carfrae | Director | 1 Apr 2005 | 31 Mar 2024 | British | 67 years |
| Turlogh Patrick O'brien | Director | 27 Nov 1992 | 31 Mar 2004 | British | 84 years |
| Yuk Nin Andy Lee | Director | 1 Apr 2023 | 24 Apr 2024 | British | 59 years |