| Andrea Rose | Director | 13 Sept 2007 | 17 Jun 2011 | British | 61 years |
| Andrew Robert Gray | Director | 13 Sept 2007 | 7 Aug 2015 | British | 62 years |
| Charles Herbert Pelham | Director | 17 Jan 1993 | 31 Dec 1994 | British | 78 years |
| Charles Hugo Colton | Secretary | 2 Feb 1994 | 29 Mar 1994 | British | - |
| Christopher Smith | Secretary | 25 Jan 1999 | 30 Dec 2000 | British | - |
| David Trevor Charles Hudson | Director | 17 Jan 1993 | 1 Jan 1994 | British | 74 years |
| David Trevor Charles Hudson | Secretary | 17 Jan 1993 | 25 Jan 1994 | British | - |
| Dean Charles Cutbill | Director | 31 Mar 2003 | 29 Sept 2003 | British | 61 years |
| Elizabeth Dimech | Secretary | 29 Mar 1994 | 1 Mar 1996 | British | - |
| Frank David Bartlett | Director | 17 Jan 1993 | 15 Feb 1999 | British | 82 years |
| Graeme Philip Winser | Director | 4 Apr 2002 | 31 Jul 2003 | British | 66 years |
| Harold John Cleminson | Director | 15 Feb 1999 | 30 Jul 2004 | British | 69 years |
| Huw Livsey Alderman | Director | 17 Jan 1993 | 1 Jan 1994 | British | 74 years |
| Huw Livsey Alderman | Director | 1 Sept 1994 | 31 Dec 1996 | British | 74 years |
| Ian Antony Bullock | Director | 2 Sept 2002 | 30 Sept 2003 | British | 71 years |
| Ian Ashley Craig | Director | 4 Nov 2013 | 15 Jun 2015 | British | 66 years |
| Ivo Philipps | Director | 1 Nov 2004 | 31 Oct 2006 | British | 58 years |
| Jayne Williams | Director | 5 Mar 2014 | 15 Jun 2015 | British | 60 years |
| John Henry Cugley | Secretary | 24 Apr 1998 | 25 Jan 1999 | British | - |
| John Morrison Stewart | Director | 1 Jan 1994 | 19 Apr 1996 | British | 76 years |
| Julie Roddy | Director | 17 Jun 2011 | 5 Jun 2013 | American | 67 years |
| Karen Michelle Connell | Director | 5 Jun 2013 | 28 Feb 2014 | British | 56 years |
| Lynne Margaret Peacock | Director | 31 Dec 1996 | 31 Mar 2003 | British | 72 years |
| Mark William Richardson | Director | 27 Jul 2004 | 26 Sept 2007 | British | 65 years |
| Michael Anthony Jennings | Director | 17 Jan 1993 | 1 Jan 1994 | British | 72 years |
| Neil Andrew Henderson | Director | 5 Jun 2013 | 28 Feb 2014 | British | 54 years |
| Paul Austin Raymond | Director | 31 Dec 1996 | 26 Sept 2002 | British | 79 years |
| Peter Charles Burton | Director | 19 Apr 1996 | 31 Dec 1996 | British | 74 years |
| Peter James Robinson | Director | 17 Jan 1993 | 1 Jan 1995 | British | 84 years |
| Richard James King | Director | 17 Dec 2015 | 30 Sept 2016 | British | 52 years |
| Richard William Griffith Deeprose | Director | 15 Feb 1999 | 13 Sept 2007 | British | 73 years |
| Roger Clark Tooze | Secretary | 1 Mar 1996 | 24 Apr 1998 | British | - |
| Suresh Viswanathan | Director | 5 Jun 2013 | 1 Nov 2013 | British | 59 years |
| Toby William Rake | Director | 17 Dec 2015 | 4 Nov 2016 | British | 48 years |
| Trevor Charles Baker | Director | 7 Jul 1997 | 30 Nov 1997 | British | 75 years |
| William Hugh Yates | Director | 24 Feb 1993 | 7 Jul 1997 | British | 90 years |