| Andrew Sebastian Martin Bruen | Director | 27 Jan 2011 | 12 Sept 2013 | British | 64 years |
| Angela Meneen Wadlow | Director | 4 Aug 1990 | 26 Jul 2012 | British | 85 years |
| Ann Judith Lloyd | Director | 22 Jan 2009 | 31 Oct 2016 | British | 78 years |
| Annamarie Hassall Hiscox | Director | 29 Jul 2019 | 6 May 2020 | British | 65 years |
| Annamarie Hassall Hiscox | Director | 29 Jul 2019 | 24 Feb 2025 | British | 65 years |
| Barry Owen Somerset Farnham | Director | 4 Aug 1990 | 30 Apr 1993 | British | 95 years |
| Bertram Alfred Kenneth Hester | Director | 4 Aug 1990 | 18 Sept 1991 | British | 104 years |
| Chanelle Gray | Director | 29 Jul 2019 | 3 Feb 2022 | British | 38 years |
| Charanjit Kaur Yogeshbhai Patel | Director | 26 Sept 2012 | 28 Jul 2015 | British | 72 years |
| Charles William Lillystone | Director | 4 Aug 1990 | 29 Jul 1998 | English | 87 years |
| Charles William Lyle Keen | Director | 26 Oct 1995 | 23 Jul 2009 | British | 90 years |
| Christina Mary Patterson | Director | 8 Feb 2016 | 29 Jul 2019 | British | 63 years |
| David Ayshford Sanford | Director | 4 Aug 1990 | 15 Oct 1992 | British | 89 years |
| David John Hinton | Director | 4 Aug 1990 | 24 Apr 2009 | British | 91 years |
| Derek Peter Hornby | Director | 19 Mar 1992 | 18 Jul 2002 | British | 96 years |
| Diane Cote | Director | 28 Apr 2021 | 7 Nov 2024 | Canadian | 63 years |
| Ernest John Readings | Director | 4 Aug 1990 | 18 Sept 1991 | British | 94 years |
| Frances Marion Leach | Director | 4 Aug 1990 | 9 May 1995 | British | 94 years |
| Frederick James Mccrindle | Director | 9 Apr 2009 | 15 Apr 2015 | British | 77 years |
| Geoffrey Holland | Director | 11 Apr 1994 | 2 Jan 1996 | British | 88 years |
| Geoffrey William Edward Short | Director | 4 Aug 1990 | 28 Apr 1993 | British | 97 years |
| Gregory Charles Allen | Director | 6 Mar 2024 | 26 Feb 2025 | British | 57 years |
| Ian Edward Lorimer Harris | Director | 4 Aug 1990 | 31 Jul 1999 | British | 94 years |
| Janet Marie Allen | Director | 2 Jun 2008 | 31 Jul 2018 | British | 69 years |
| Jean Shirley Loveday | Secretary | 9 Sept 1998 | 15 Jan 1999 | British | - |
| Jeffrey John Halliwell | Director | 27 Jan 2011 | 23 Nov 2012 | British | 72 years |
| Jenkin Robert Glanna Lewis | Director | 25 Mar 2004 | 12 Aug 2008 | British | 79 years |
| Jeremy Patrick Moore | Director | 2 Oct 2018 | 21 Apr 2023 | British | 70 years |
| John Fisher Woods | Secretary | 3 Jun 1991 | 9 Sept 1998 | British | - |
| John Freeman Briffitt | Director | 13 Sept 1999 | 24 Jul 2013 | British | 88 years |
| John Gisby | Director | 4 Aug 1990 | 18 Sept 1991 | British | 95 years |
| John Hamish Orr-ewing | Director | 4 Aug 1990 | 31 Jan 2002 | British | 102 years |
| John Norman | Director | 26 Sept 2012 | 3 Feb 2022 | British | 75 years |
| John Roger Bradbeer | Director | 4 Aug 1990 | 27 May 2003 | British | 96 years |
| Judith Shrimpton | Director | 4 Aug 1990 | 21 Oct 1992 | British | 90 years |
| Kalm Paul-christian | Director | 3 Feb 2022 | 26 Feb 2025 | British | 33 years |
| Kenneth Aphunezi Olisa | Director | 25 Sept 2013 | 11 May 2023 | British | 75 years |
| Laurence James Packer | Director | 23 Oct 1991 | 26 Jul 1997 | British | 83 years |
| Leonard Alan Gale | Director | 4 Aug 1990 | 3 Nov 1994 | British | 86 years |
| Lord Carter | Corporate Director | 23 Oct 1991 | 7 Jun 1997 | - | - |
| Madeline Gillian Brain | Director | 28 Nov 2002 | 26 Jul 2012 | British | 83 years |
| Mansel Aylward | Director | 26 May 2005 | 1 Apr 2007 | British | 84 years |
| Margaret Eyelyn Robins | Director | 4 Aug 1990 | 5 Mar 1993 | British | 87 years |
| Marie-claire O'brien | Director | 1 Aug 2019 | 6 May 2020 | British | 46 years |
| Mark Daymond | Director | 28 Mar 2002 | 12 Dec 2007 | British | 90 years |
| Mark Woodward | Secretary | 29 Sept 2005 | 30 Jan 2014 | British | - |
| Martyn James Bridger | Director | 27 Jan 2011 | 26 Jul 2012 | British | 73 years |
| Maurice Johnston | Director | 26 Oct 1995 | 18 Jul 1996 | British | 97 years |
| Michael John Edwards | Director | 21 Oct 1992 | 18 Jul 1996 | English | 82 years |
| Michael John William King | Director | 4 Aug 1990 | 30 Apr 1994 | British | 78 years |
| Michael Leslie Nussbaum | Director | 8 Feb 2016 | 14 May 2025 | British | 80 years |
| Michael Philip Beaven | Secretary | 15 Jan 1999 | 29 Sept 2005 | British | - |
| Mike Hawker | Director | 26 Sept 2012 | 3 Feb 2022 | British | 77 years |
| Nicholas Oliver Charles Carey | Secretary | 28 Jan 2014 | 5 Jul 2019 | British | - |
| Paul Mcgee | Director | 7 Feb 2019 | 20 Sept 2023 | British | 82 years |
| Peter David Holmes | Director | 26 Sept 2012 | 3 Feb 2022 | British | 73 years |
| Philip Martin Hollins | Director | 9 Apr 2009 | 28 Jul 2015 | British | 79 years |
| Philomena Crean | Director | 4 Aug 1990 | 14 Jun 1995 | Irish | 94 years |
| Rebecca Anne Sudworth | Director | 8 Feb 2016 | 17 Apr 2019 | British | 59 years |
| Reginald Paul Rhodes | Director | 4 Aug 1990 | 21 Oct 1992 | British | 108 years |
| Richard Mansell-jones | Director | 4 Aug 1990 | 12 Sept 1996 | British | 86 years |
| Simon Paul Merchant | Director | 2 Jun 2008 | 17 Oct 2011 | British | 59 years |
| Stephanie Cutler | Director | 29 Jul 2019 | 16 Jul 2020 | British | 50 years |
| Stephen Noel King | Secretary | 29 Oct 2019 | 26 Jan 2021 | - | - |
| Stuart William Innes | Director | 5 Feb 1999 | 26 Jul 2012 | British | 83 years |
| Sukhdev Mulkhraj Sharma | Director | 28 Nov 2002 | 29 Apr 2010 | British | 80 years |
| Terina Elizabeth Hammond | Director | 4 Aug 1990 | 29 Oct 1993 | British | 69 years |
| Thomas Priestly Wingfield | Director | 4 Aug 1990 | 5 Aug 1993 | British | 88 years |
| Timothy Vernon Francis Pape | Secretary | 22 Apr 1991 | 3 Jun 1991 | British | - |
| Timothy Vernon Francis Pape | Secretary | 12 May 1994 | 1 Apr 2010 | British | - |
| Vanessa Helen Miner | Director | 27 Jan 2011 | 13 Apr 2018 | British | 64 years |
| Wendy Pamela Lansdown | Secretary | 19 Apr 1990 | 18 Apr 1991 | British | - |
| William Samuel Clive Richards | Director | 23 Oct 1991 | 18 Jul 2002 | British | 89 years |