| Alan Brindle | Director | 1 Jan 1998 | 16 Jun 2000 | British | 83 years |
| Alan Keith Watkins | Director | 1 Oct 1992 | 30 Jun 1994 | British | 87 years |
| Alan Marshall Bailey | Director | 11 Mar 1994 | 31 Mar 1995 | British | 94 years |
| Andrew Peter Stanton Lord | Director | 18 May 2022 | 15 Dec 2022 | British | 55 years |
| Anthony John Sheppeck | Director | 1 Apr 1993 | 31 Mar 1995 | British | 85 years |
| Brian David Everett | Director | 23 Feb 2000 | 16 Jun 2000 | British | 90 years |
| Claire Mann | Director | 23 Oct 2017 | 5 Mar 2021 | British | 52 years |
| Clive Hodson | Director | 24 Aug 1991 | 21 Jul 2000 | British | 83 years |
| Clive Hodson | Secretary | 3 Sept 1993 | 31 Mar 1995 | British | - |
| David Allen Brown | Director | 5 Mar 2007 | 31 Mar 2011 | British | 65 years |
| David Anthony Bowen | Director | 19 Oct 2000 | 19 Oct 2007 | Irish | 67 years |
| David Anthony Bowen | Secretary | 19 Oct 2000 | 15 Jul 2003 | Irish | - |
| David Charles Hendry | Director | 4 Mar 2008 | 31 Mar 2014 | British | 68 years |
| David John Wylie | Director | 1 Mar 2018 | 1 Jun 2019 | British | 51 years |
| David Thompson | Director | 1 Apr 1992 | 31 Mar 1993 | British | 93 years |
| Derek Stephen Watson | Director | 1 Jan 1994 | 31 Mar 1995 | British | 76 years |
| Donald Niven Allen Mclure | Director | 24 Aug 1991 | 31 Mar 1993 | British | 99 years |
| Ellen Howard | Secretary | 2 Oct 2008 | 15 Jul 2011 | Other | - |
| Fiona Brown Smith | Secretary | 1 Apr 2005 | 23 Dec 2005 | British | - |
| Frances Low | Director | 31 May 1997 | 3 Jul 2000 | British | 78 years |
| Frances Low | Secretary | 31 May 1997 | 19 Jun 2000 | British | - |
| Gareth William Powell | Director | 1 Sept 2016 | 18 May 2022 | British | 49 years |
| Garrett Russell Emmerson | Director | 26 Sept 2013 | 30 Apr 2017 | British | 60 years |
| Gary Filbey | Director | 30 Oct 2000 | 30 Sept 2016 | British | 67 years |
| Glynn Edward Barton | Director | 19 Dec 2022 | 17 May 2024 | British | 47 years |
| Graham Elliott | Director | 23 Feb 2000 | 19 Oct 2000 | British | 79 years |
| Howard Ernest Carter | Secretary | 4 Sept 2006 | 29 Sept 2023 | British | - |
| Ian Eric King | Director | 31 Mar 1995 | 30 May 1997 | British | 82 years |
| Ian Eric King | Secretary | 31 Mar 1995 | 30 May 1997 | British | - |
| Jacqueline Anne Gregory | Secretary | 15 Jul 2003 | 4 Jun 2004 | British | - |
| Jeff Chamberlain | Director | 19 Oct 2000 | 1 Mar 2007 | British | 80 years |
| Jeffrey Henderson Pipe | Secretary | 4 Sept 2006 | 9 Jul 2010 | British | - |
| Joanne Marie Chance | Secretary | 7 Jun 2004 | 30 Sept 2007 | British | - |
| John Ernest Ingleton | Director | 24 Aug 1991 | 26 Mar 1993 | British | 92 years |
| John Telford Beasley | Director | 24 Aug 1991 | 31 Mar 1992 | British | 96 years |
| Jonathan James Patrick | Director | 25 Sept 2019 | 17 Oct 2022 | British | 58 years |
| Keith Anthony Moffatt | Director | 19 Oct 2000 | 30 Apr 2001 | British | 71 years |
| Leon Alistair Daniels | Director | 20 Apr 2011 | 20 Dec 2017 | British | 70 years |
| Louisa Dianne Sherry | Secretary | 7 Jun 2004 | 1 Apr 2005 | British | - |
| Louise Mary Edwards | Director | 18 May 2022 | 2 Jan 2024 | British | 64 years |
| Michael Gordon Heath | Director | 23 Feb 2000 | 19 Oct 2000 | British | 76 years |
| Michael John Weston | Director | 28 Aug 2004 | 30 Sept 2016 | British | 63 years |
| Michael Marsh | Director | 24 Aug 1991 | 16 Feb 1992 | English | 88 years |
| Norman Victor Cohen | Director | 24 Aug 1991 | 31 Dec 1997 | British | 85 years |
| Patrick Doig | Director | 31 Mar 2014 | 15 Dec 2022 | British | 43 years |
| Peter Andrew Blake | Director | 23 Apr 2015 | 30 Nov 2017 | British | 55 years |
| Peter Gerard Hendy | Director | 8 Jun 2001 | 10 Feb 2006 | British | 72 years |
| Peter William Mcguirk | Secretary | 24 Dec 2005 | 29 Sept 2006 | British | - |
| Rajiv Sachdeva | Director | 19 Dec 2022 | 22 Sept 2023 | British | 56 years |
| Richard Philip James Webster | Director | 20 May 2003 | 10 Jul 2007 | British | 60 years |
| Richard William Halle | Director | 21 Jul 2000 | 19 Oct 2000 | British | 73 years |
| Richard William Halle | Director | 26 Jun 2007 | 1 Oct 2010 | British | 73 years |
| Rodney Bryan Pangbourne | Director | 24 Aug 1991 | 3 Sept 1993 | British | 83 years |
| Rodney Bryan Pangbourne | Secretary | 24 Aug 1991 | 3 Sept 1993 | British | - |
| Rosemary Day | Director | 24 Aug 1991 | 31 Mar 1993 | British | 83 years |
| William Gilbert Bostock | Director | 19 Jun 2000 | 19 Oct 2000 | British | 76 years |
| William Gilbert Bostock | Secretary | 19 Jun 2000 | 19 Oct 2000 | British | - |