| Alan John Gordon | Director | 1 Feb 1991 | 9 Oct 1998 | British | 78 years |
| Alexander David Baldock | Director | 1 Aug 2008 | 31 Aug 2012 | British | 55 years |
| Andrew David Barnard | Director | 31 Aug 2012 | 20 Nov 2013 | British | 54 years |
| Andrew Paul Gadsby | Director | 2 Jan 2015 | 17 May 2018 | British | 59 years |
| Andrew Stuart Hart | Director | 24 Mar 2009 | 29 Sept 2011 | British | 51 years |
| Anthony Paul Bamford | Director | 1 Feb 1991 | 11 Jun 2013 | British | 80 years |
| Christophe Hannequin | Director | 18 May 2022 | 7 Oct 2024 | French | 49 years |
| Christopher George Knowles | Director | 14 Nov 2001 | 31 Mar 2004 | British | 68 years |
| Christopher Paul Sullivan | Director | 22 May 2001 | 18 Oct 2004 | British | 68 years |
| David George Powell | Director | 1 Jan 2013 | 31 Mar 2021 | British | 64 years |
| David John Burgess | Director | 12 Oct 1993 | 30 Sept 2011 | British | 76 years |
| David Samuel Dolbear | Director | 7 Sept 2016 | 3 Jul 2020 | British | 61 years |
| David Thomas Brown | Director | 3 Jul 2020 | 29 Apr 2022 | British | 55 years |
| Edward Timothy David Leadbeater | Director | 18 Nov 1992 | 10 May 2006 | British | 81 years |
| Gary Stephen Mcginty | Director | 1 Apr 2021 | 1 Jul 2025 | British | 57 years |
| Gerald Jennings Simms | Director | 1 Jun 1994 | 22 May 2001 | British | 82 years |
| Gilbert Johnston | Director | 1 Feb 1991 | 18 Nov 1992 | British | 93 years |
| Gordon Bewick Green | Director | 1 Feb 1991 | 26 Feb 1993 | British | 86 years |
| Ian John Isaac | Director | 29 Sept 2011 | 11 Sept 2024 | British | 62 years |
| Johannes Riaan Hubinger | Director | 13 Nov 2024 | 26 Sept 2025 | South African,british | 45 years |
| John Donald Black Workman | Director | 12 May 2016 | 10 Jun 2025 | British | 73 years |
| John Henry Torney | Director | 1 Feb 1991 | 24 Aug 1994 | British | 84 years |
| Jonathan Charles Hall | Secretary | 1 Feb 2008 | 20 Nov 2013 | British | - |
| Joseph Alexander Pattara | Director | 17 May 2018 | 10 Nov 2021 | British | 52 years |
| Joseph Cyril Edward Bamford | Director | 11 Jun 2013 | 17 Nov 2016 | British | 48 years |
| Martin Joseph Wilson | Director | 4 Mar 1999 | 18 May 2005 | Irish | 75 years |
| Michael Hargreaves | Director | 22 Apr 2002 | 20 Apr 2020 | British | 68 years |
| Paul Anthony Lynam | Director | 1 Nov 2004 | 1 Aug 2008 | Irish | 57 years |
| Paul Marrow | Director | 1 Apr 2004 | 12 May 2016 | British | 73 years |
| Paul Martin Marston | Director | 9 Jun 2005 | 24 Mar 2009 | British | 54 years |
| Paul Ronald Jennings | Director | 1 Oct 2011 | 18 May 2022 | British | 68 years |
| Peter Johannus Snelson | Director | 12 Nov 2003 | 31 Jan 2008 | British | 77 years |
| Peter Johannus Snelson | Secretary | 1 Feb 1991 | 31 Jan 2008 | British | - |
| Richard Andrew Hemsley | Director | 20 Nov 2013 | 2 Jan 2015 | British | 61 years |
| Robert Alexander Mark Winter | Director | 10 May 2006 | 11 Jun 2013 | British | 52 years |
| Robert Alexander Mark Winter | Director | 11 Sept 2013 | 7 Sept 2016 | British | 52 years |
| Robert John Mckay | Director | 25 Nov 1998 | 7 Sept 1999 | Irish | 76 years |
| Ronald David Kells | Director | 1 Feb 1991 | 15 Feb 1999 | British | 87 years |
| William Bernard Kingston | Director | 7 Sept 1999 | 30 Sept 2001 | Irish | 69 years |
| William Pearson | Director | 12 Nov 2003 | 11 Jun 2013 | British | 72 years |