| Adrian Paul Collier | Director | 17 Sept 2018 | 28 Sept 2018 | British | 51 years |
| Alan George Scott | Director | 6 Sept 2005 | 19 Jan 2006 | British | 76 years |
| Alberto Buffa | Director | 18 May 2015 | 9 Dec 2016 | Italian | 41 years |
| Andrew Pattison | Director | 19 Jan 2006 | 30 Mar 2009 | British | 59 years |
| Andrew William Longden | Director | 10 Apr 1995 | 21 Apr 1995 | British | 69 years |
| Andrew William Longden | Director | 5 Feb 1996 | 23 Apr 2001 | British | 69 years |
| Ann-louise Holding | Secretary | 19 Jul 1993 | 30 Jan 1995 | British | - |
| Anthony James Lawrinson | Director | 14 Dec 2000 | 2 Jan 2001 | British | 57 years |
| Antony John Gara | Director | 23 Mar 2020 | 11 Jun 2020 | British | 52 years |
| Antony John Gara | Director | 25 Sept 2024 | 15 Apr 2025 | British | 52 years |
| Barry David Romeril | Director | 16 Nov 1992 | 30 Jun 1993 | British | 83 years |
| Brian Denis More O'ferrall | Director | 28 Sept 2017 | 2 Oct 2017 | British | 61 years |
| Charles Richard Hindson | Director | 5 Feb 1996 | 21 Dec 1999 | British | 67 years |
| Christina Bridget Ryan | Director | 15 Apr 2003 | 31 Mar 2025 | Irish | 66 years |
| Christina Bridget Ryan | Secretary | 15 Apr 2003 | 31 Mar 2025 | Irish | - |
| Colin John Holmes | Secretary | 30 Jan 1995 | 5 Jul 1995 | British | - |
| David Andrew Wilson | Director | 22 Feb 1994 | 5 Feb 1996 | United Kingdom | 78 years |
| David Hywel Sanger | Secretary | 13 Oct 1997 | 22 Jun 2000 | British | - |
| David Scriven | Director | 28 May 1996 | 7 Jun 1996 | British | 68 years |
| David Scriven | Director | 1 Oct 1996 | 11 Nov 1996 | British | 68 years |
| David Scriven | Director | 26 May 1997 | 9 Jun 1997 | British | 68 years |
| David Scriven | Director | 18 Aug 1997 | 31 Aug 1997 | British | 68 years |
| David Scriven | Director | 14 Aug 1998 | 31 Aug 1998 | British | 68 years |
| David William Ian Sams | Director | 23 Apr 2001 | 25 Oct 2002 | British | 56 years |
| Gareth James Bartman | Secretary | 31 Jul 2000 | 10 Nov 2000 | British | - |
| Garry Wardle | Director | 27 Oct 2021 | 31 May 2023 | British | 57 years |
| Heather Gwendolyn Brierley | Director | 19 Sept 2002 | 30 Sept 2002 | British | 55 years |
| Helen Louise Ashton | Director | 12 Nov 2002 | 11 Nov 2010 | British | 64 years |
| Helen Louise Ashton | Secretary | 5 Mar 2002 | 11 Nov 2010 | British | - |
| Helen Louise Aston | Director | 25 Oct 2002 | 25 Oct 2002 | British | 64 years |
| John Henry Brougham | Director | 16 Nov 1992 | 5 Feb 1996 | British | 75 years |
| John Stephen Allkins | Director | 16 Nov 1992 | 21 Jul 1995 | British | 77 years |
| Katherine Ann Walker | Director | 8 Jul 1996 | 12 Jul 1996 | British | 75 years |
| Katherine Ann Walker | Director | 17 Aug 1998 | 31 Aug 1998 | British | 75 years |
| Katherine Ann Walker | Secretary | 16 Nov 1992 | 15 Jul 2002 | British | - |
| Katherine Mary Duffy | Director | 18 Aug 1997 | 31 Aug 1997 | British | 81 years |
| Katherine Mary Duffy | Secretary | 5 Jul 1995 | 31 Jul 2000 | British | - |
| Louise Alison Clare Blackwell | Director | 9 Dec 2008 | 14 Oct 2013 | British | 44 years |
| Louise Alison Clare Blackwell | Secretary | 11 Nov 2010 | 14 Oct 2013 | British | - |
| Manfred Kuerten | Director | 19 Jan 2006 | 9 Dec 2008 | German Canadian | 67 years |
| Mark Philip Genikis | Director | 30 Jun 2003 | 19 Jan 2006 | British | 65 years |
| Michael John Cole | Director | 14 Oct 2013 | 28 Feb 2014 | British | 56 years |
| Michael Joseph Mohun | Director | 11 Jul 2019 | 29 Jul 2019 | Australian | 36 years |
| Nicola Brenchley | Director | 3 Aug 2015 | 19 Jun 2023 | British | 58 years |
| Paula Annette Walsh | Secretary | 13 Oct 1997 | 5 Mar 2002 | British | - |
| Philip Norman Allenby | Director | 14 Oct 2013 | 18 May 2015 | British | 66 years |
| Raymond Andrew Palmer | Director | 16 Mar 2000 | 31 Oct 2002 | British | 74 years |
| Richard James Wilson | Director | 31 Jul 1995 | 16 Aug 1995 | British | 76 years |
| Richard Paul Humphreys | Director | 7 Mar 2002 | 30 Jun 2003 | British | 52 years |
| Richard William Savage | Director | 16 Nov 1992 | 5 Feb 1996 | British | 76 years |
| Robert John Harwood | Secretary | 10 Nov 2000 | 5 Mar 2002 | British | - |
| Stephen John Prior | Director | 5 Feb 1996 | 6 Sept 2005 | British | 73 years |
| Thea Eleri Tanner | Director | 27 Jul 2023 | 20 Sept 2023 | British | 39 years |
| Valerie Clayton | Secretary | 22 Jul 2002 | 15 Apr 2003 | British | - |
| William Paton Stringer | Director | 21 Nov 2003 | 19 Jan 2006 | British | 69 years |