| Adrian Roger Wyatt | Director | 25 Sept 1992 | 25 May 2012 | British | 78 years |
| Angus Alexander Dodd | Director | 27 Jun 2016 | 7 Nov 2019 | British | 59 years |
| Brian Jack Mitchell | Director | 31 May 1994 | 6 Aug 1997 | British | 91 years |
| Charlotte Ind Eastwood | Secretary | 23 Jul 2002 | 25 Oct 2004 | British | - |
| Christopher Hamilton Armon-jones | Director | 12 Nov 1996 | 6 Aug 1997 | British | 77 years |
| Christopher John Barry Walls | Director | 25 Sept 1992 | 5 Jun 1997 | British | 78 years |
| Christopher John Barry Walls | Secretary | 14 Mar 1994 | 18 Aug 1995 | British | - |
| Daniel Mark Greenslade | Director | 31 Mar 2015 | 26 May 2015 | British | 50 years |
| David Jeffrey Kirkpatrick | Director | 12 Nov 1996 | 6 Aug 1997 | British | 85 years |
| David Nicholas Gavaghan | Director | 10 May 2010 | 16 Feb 2012 | British | 67 years |
| Edward Stratford Dugdale | Director | 25 Mar 1996 | 7 Oct 2002 | British | 67 years |
| Gail Robson Skeete | Secretary | 20 Oct 1999 | 30 May 2000 | British | - |
| James Robert Hamilton Stubber | Director | 14 Oct 2002 | 17 Feb 2006 | British | 72 years |
| John Bryan Evans | Director | 31 May 1994 | 6 Aug 1997 | British | 92 years |
| John Ernest Spratt | Secretary | 25 Sept 1992 | 14 Mar 1994 | British | - |
| John Ernest Spratt | Secretary | 8 May 1993 | 14 Mar 1994 | British | - |
| Keith Hainsworth | Director | 8 May 1993 | 31 Jan 1994 | British | 83 years |
| Margaret Hainsworth | Director | 8 May 1992 | 25 Sept 1992 | British | 85 years |
| Margaret Hainsworth | Secretary | 8 May 1992 | 25 Jul 1992 | British | - |
| Maxwell David Shaw James | Director | 25 May 2012 | 27 Jun 2016 | British | 59 years |
| Michael Ben Jenkins | Director | 13 Jan 2017 | 31 Dec 2020 | British | 54 years |
| Michael Edward Riley | Director | 13 Aug 2001 | 31 Jul 2002 | British | 66 years |
| Nicholas Simon Keith Shattock | Director | 14 Jun 1995 | 24 Mar 2011 | British | 67 years |
| Nicholas Simon Keith Shattock | Secretary | 18 Aug 1995 | 20 May 1997 | British | - |
| Nigel George Ellis | Director | 8 Nov 1995 | 4 Sept 2007 | British | 87 years |
| Paul Hughes | Secretary | 20 May 1997 | 31 Jan 2000 | British | - |
| Rebecca Jane Worthington | Director | 22 Aug 2001 | 31 Oct 2012 | British | 55 years |
| Rebecca Jane Worthington | Secretary | 9 Dec 1998 | 23 Jul 2002 | British | - |
| Richard James Stearn | Director | 1 Aug 2012 | 31 Mar 2015 | British | 58 years |
| Sandra Judith Odell | Secretary | 1 Jan 2013 | 5 Oct 2016 | - | - |
| Simon Geoffrey Carter | Director | 26 May 2015 | 13 Jan 2017 | British | 51 years |
| Susan Elizabeth Dixon | Secretary | 25 Oct 2004 | 1 Jan 2013 | British | - |
| Tonianne Dwyer | Director | 30 Nov 2006 | 16 Apr 2010 | Australian | 64 years |