| Allan John Clark | Director | 30 May 1994 | 30 Sept 1994 | British | 72 years |
| Andrew David Fairhurst | Secretary | 30 May 1992 | 23 Aug 1993 | British | - |
| Bernard Leigh Hickman | Director | 1 Jan 2005 | 30 Jan 2006 | British | 51 years |
| Carlos Guillermo Gustavo Thibaut | Director | 6 Sept 2000 | 30 Jul 2002 | British | 68 years |
| Carol Ann Dockrell | Secretary | 20 Jun 1997 | 6 Feb 1998 | British | - |
| Christopher John Last | Director | 7 Dec 1993 | 16 Sept 1994 | British | 70 years |
| Christopher Roger David Hollingdale | Director | 24 Jul 2019 | 17 Feb 2023 | British | 42 years |
| Colin Charles Harris | Director | 30 May 1992 | 7 Nov 1996 | British | 82 years |
| David Maltby | Director | 13 Nov 1992 | 31 Dec 2000 | British | 81 years |
| Duncan Crocker | Director | 14 Oct 2010 | 31 Dec 2013 | British | 68 years |
| Duncan Crocker | Director | 16 Feb 1999 | 6 Sept 2000 | British | 68 years |
| Gareth John Hoskin | Director | 1 Jan 1998 | 16 Feb 1999 | British | 66 years |
| Gary Peter Burchett | Director | 22 Jan 2007 | 14 Oct 2010 | British | 62 years |
| Geoffrey Michael Wright | Director | 13 Nov 1992 | 31 Oct 1993 | British | 62 years |
| Graham Trevor Anthony Newitt | Director | 30 Jul 2002 | 22 Mar 2004 | British | 66 years |
| Jeffrey William Wilson | Director | 13 Nov 1992 | 10 Sept 1993 | British | 69 years |
| John Brackenridge Pollock | Director | 2 Mar 1995 | 23 Sept 1996 | Scottish | 68 years |
| John Brackenridge Pollock | Director | 22 Jan 2007 | 10 Jul 2007 | British | 68 years |
| John Leonard Shearman | Director | 6 Sept 1995 | 23 Sept 1996 | British | 73 years |
| Julie Patricia Seabrook | Secretary | 18 Dec 1998 | 1 Oct 2002 | British | - |
| Kevin William Webb | Director | 31 Dec 2017 | 24 Aug 2022 | British | 61 years |
| Lawrence Kevin Penney | Director | 30 May 1992 | 1 Feb 1996 | British | 77 years |
| Lawrence Kevin Penney | Director | 10 Apr 1997 | 27 Oct 2005 | British | 77 years |
| Lee Beadman | Director | 16 Jan 1995 | 12 Mar 1999 | British | 65 years |
| Mark Julian Gregory | Director | 9 Dec 1998 | 9 Sept 2000 | British | 63 years |
| Mark Newton | Director | 7 Apr 1997 | 28 Oct 1998 | British | 71 years |
| Mark Peter Kelly | Director | 1 Feb 1996 | 10 Apr 1997 | British | 69 years |
| Martin Charles Noone | Director | 13 Jan 2014 | 27 Nov 2015 | British | 60 years |
| Michael Ian Stoop | Director | 20 Mar 2001 | 31 Oct 2014 | British | 71 years |
| Neville Russell Walton | Director | 7 Nov 1996 | 6 Feb 1998 | British | 73 years |
| Nicolas John Thatcher | Director | 13 Nov 1992 | 29 Apr 1994 | British | 80 years |
| Paul Douglas Stewart | Director | 13 Nov 1992 | 30 Apr 1997 | British | 66 years |
| Paul John Mitchener | Director | 22 Mar 2004 | 22 Jan 2007 | British | 65 years |
| Peter Rowntree | Director | 13 Nov 1992 | 1 Feb 1994 | British | 78 years |
| Richard Alan Beer | Director | 16 Feb 1999 | 9 Sept 2000 | British | 59 years |
| Robert Peter Sewell | Director | 2 Jul 2001 | 27 Mar 2007 | Irish | 62 years |
| Robin Ashley Phipps | Director | 1 Aug 1998 | 22 Jan 2007 | British | 76 years |
| Sally Jane Williams | Secretary | 6 Feb 1998 | 18 Dec 1998 | British | - |
| Simon Richard Griffiths | Director | 17 Feb 2023 | 22 Jul 2025 | British | 57 years |
| Stephen Alan Goodall | Director | 19 Jan 2009 | 20 Mar 2017 | British | 56 years |
| Stephen Charles Addison Smith | Director | 27 Oct 2005 | 31 Dec 2017 | British | 69 years |
| Stephen John Tearle | Director | 13 Mar 2007 | 1 May 2009 | British | 53 years |
| Thomas Andrew Forwood Smith | Secretary | 23 Aug 1993 | 18 Apr 1997 | British | - |
| Vanessa White | Director | 6 Sept 2000 | 25 Sept 2019 | British | 61 years |
| Vijay Subramanyam Ayer | Secretary | 6 May 1997 | 20 Jun 1997 | British | - |