| Alice Hannah Black | Director | 4 Nov 2019 | 26 Aug 2022 | British | 42 years |
| Alice Hannah Black | Secretary | 4 Nov 2019 | 26 Aug 2022 | - | - |
| Andrew Ernest Wilkinson | Director | 1 Nov 2021 | 17 Jun 2022 | British | 56 years |
| Andrew Panter | Director | 31 May 1996 | 9 Dec 2000 | British | 81 years |
| Anna Lynnette Edgeworth | Director | 2 Apr 2001 | 30 Nov 2005 | British | 72 years |
| Brian Henry Cowie | Director | 1 Jan 1993 | 9 Dec 2000 | British | 78 years |
| Catherine Bernadette Wheatley | Secretary | 7 Jun 1996 | 1 Jul 1998 | British | - |
| Christopher Carney | Director | 2 May 2008 | 28 Jan 2011 | British | 51 years |
| Daniel Hugh Mcgowan | Director | 16 Jan 2017 | 1 Feb 2021 | British | 56 years |
| David Crawford Bridges | Director | 3 Jul 2007 | 2 May 2008 | British | 58 years |
| David Henry Livingstone | Director | 1 Apr 2004 | 18 Nov 2005 | British | 69 years |
| David John Holland | Director | 1 Jan 1993 | 25 Mar 1996 | British | 84 years |
| Dennis Brant | Director | 4 Mar 1996 | 16 Oct 2000 | British | 75 years |
| Fergus David Mcconnell | Director | 22 Nov 2005 | 31 Dec 2016 | British | 63 years |
| George Bruce Wheelan | Director | 1 Jan 1993 | 31 Dec 1998 | British | 86 years |
| Gillian Elizabeth Sarah Haywood Bamber | Director | 20 Feb 1995 | 26 Mar 1996 | British | 72 years |
| Graeme James Dodds | Director | 1 Jul 2004 | 3 Jul 2007 | British | 66 years |
| Graham Thomas Hughes | Director | 1 Oct 2001 | 31 Jan 2007 | British | 67 years |
| Ian Calvert Sutcliffe | Director | 1 Feb 2006 | 14 Apr 2008 | British | 66 years |
| Ian John Hart | Director | 10 Jan 1997 | 31 Mar 1999 | British | 81 years |
| James John Jordan | Director | 11 May 2011 | 31 Dec 2019 | British | 64 years |
| James John Jordan | Secretary | 31 Dec 2007 | 6 Feb 2008 | British | - |
| James John Jordan | Secretary | 24 Aug 2011 | 4 Nov 2019 | - | - |
| James Phillips | Director | 2 Apr 2001 | 31 Dec 2005 | British | 74 years |
| James Phillips | Secretary | 1 Jul 2001 | 19 Apr 2006 | British | - |
| John Bernard Gainham | Director | 22 Nov 2005 | 3 Jul 2007 | British | 66 years |
| John Ernest King | Director | 24 Dec 1996 | 14 May 2001 | British | 78 years |
| Jonathan Charles Murrin | Director | 3 Jul 2007 | 2 May 2008 | British | 56 years |
| Jonathan Robert Kinsey | Director | 22 Sept 2003 | 31 Jul 2004 | British | 65 years |
| Julian Murray | Director | 1 Jan 1993 | 9 Dec 2000 | British | 86 years |
| Keith Morgan Cushen | Director | 15 Dec 1994 | 25 Mar 1996 | British | 78 years |
| Keith Morgan Cushen | Director | 11 Dec 2000 | 31 Dec 2003 | British | 78 years |
| Malcolm William Pitcher | Director | 10 Jan 1997 | 30 Apr 1998 | British | 73 years |
| Maria Bridget Pilfold | Director | 9 Dec 2008 | 1 Aug 2014 | British | 62 years |
| Michael Andrew Lonnon | Secretary | 26 Aug 2022 | 21 Feb 2023 | - | - |
| Michael Blacker | Director | 14 May 1996 | 31 Aug 1997 | British | 70 years |
| Michael Brynley Tanner | Director | 2 Apr 2001 | 31 Dec 2004 | British | 81 years |
| Michael James O'sullivan | Director | 2 Apr 2001 | 31 Mar 2006 | British | 77 years |
| Neil Athorn | Director | 1 Oct 2001 | 18 Nov 2005 | British | 64 years |
| Nicola Amanda Eleanor Hastie | Secretary | 19 Apr 2006 | 31 Dec 2007 | British | - |
| Nigel Holland | Director | 22 Jul 2015 | 1 Oct 2024 | British | 65 years |
| Paul Ernest Healey | Director | 1 Nov 2002 | 31 Mar 2004 | British | 76 years |
| Peter Anthony Carr | Secretary | 6 Feb 2008 | 24 Aug 2011 | British | - |
| Peter David Bernard | Director | 27 Jun 1997 | 7 Dec 2001 | British | 81 years |
| Peter Martin Truscott | Director | 1 Jul 2004 | 27 Jul 2015 | British | 63 years |
| Peter Robert Andrew | Director | 3 Jul 2007 | 17 Jul 2015 | British | 66 years |
| Peter Timothy Redfern | Director | 8 Jan 2000 | 1 Feb 2006 | British | 55 years |
| Peter Timothy Redfern | Director | 1 Feb 2006 | 30 Jun 2006 | British | 55 years |
| Peter Timothy Redfern | Director | 24 Apr 2008 | 26 Apr 2022 | British | 55 years |
| Peter William Irving Ingram | Secretary | 1 Jan 1993 | 1 Jan 1995 | British | - |
| Raymond Anthony Peacock | Director | 2 May 2008 | 22 Dec 2008 | British | 59 years |
| Richard Arnold Andrew | Director | 1 Jan 1993 | 31 Mar 1995 | British | 81 years |
| Robin George Tyler | Director | 1 Jan 1993 | 1 Jan 1995 | British | 90 years |
| Rodney Howard Bullough | Director | 1 Jan 1993 | 24 Dec 1996 | British | 82 years |
| Ryan Dirk Mangold | Director | 28 Jan 2011 | 20 Apr 2018 | South African And British | 54 years |
| Stefan Edward Bort | Secretary | 1 Jan 1995 | 7 Jun 1996 | British | - |
| Stefan Edward Bort | Secretary | 1 Jul 1998 | 1 Jul 2001 | British | - |
| Stephen Adrian Jenkins | Director | 15 Dec 2003 | 3 Jul 2007 | British | 58 years |
| William John Holland-kaye | Director | 3 Jul 2007 | 2 May 2008 | British | 60 years |