| Alan George Saunders | Director | 1 Nov 2006 | 20 Jun 2012 | British | 77 years |
| Alan James Gibson | Director | 8 Dec 1999 | 15 Aug 2000 | British | 71 years |
| Alison Barbara Moss | Secretary | 1 May 2002 | 1 Apr 2007 | British | - |
| Andrew William Mcconachie | Director | 27 Feb 1995 | 10 Sept 1998 | British | 89 years |
| Annette Karyn Mcinnes | Director | 21 Sept 2016 | 5 Sept 2023 | British | 54 years |
| Brian Harris | Director | 21 Aug 2002 | 15 Sept 2003 | British | 79 years |
| Bryan Charles Hines | Director | 24 May 1991 | 21 Nov 2001 | British | 94 years |
| Colin Edward Marshall | Director | 31 Dec 1991 | 31 Mar 2000 | British | 87 years |
| Colin Edward Marshall | Director | 10 Nov 2000 | 8 Dec 2011 | British | 87 years |
| David Arthur Richardson | Director | 10 Sept 1998 | 28 Jun 2002 | British | 82 years |
| David Arthur Wimpress | Director | 14 Aug 1992 | 10 Feb 1995 | British | 80 years |
| David Christopher Laborde Marwood | Director | 31 Dec 1991 | 29 Feb 1996 | British | 103 years |
| David John Berry | Director | 26 Feb 1996 | 5 Nov 1996 | British | 91 years |
| David John Edward Roberts | Director | 23 Sept 2009 | 21 Oct 2009 | British | 64 years |
| Dermot Gerard Maguire | Director | 2 Mar 2017 | 15 Mar 2022 | Irish | 65 years |
| Donald Farquharson Beattie | Director | 31 Dec 1991 | 29 Feb 1996 | British | 83 years |
| Fiona Colquhoun | Director | 16 May 1997 | 9 Nov 2001 | British | 74 years |
| Frederic John Kane | Director | 27 Feb 1995 | 11 Mar 2004 | British | 96 years |
| Gareth John Trevor | Director | 5 Mar 1991 | 14 Aug 1992 | British | 76 years |
| Gwyneth Lloyd | Secretary | 15 Oct 2015 | 19 Jan 2018 | - | - |
| Harold Leslie Crooks | Director | 31 Dec 1991 | 10 Nov 1994 | British | 97 years |
| Janet Rice | Director | 1 Feb 2002 | 31 Jan 2020 | British | 77 years |
| Jennifer Sharon Davidson | Secretary | 15 Jan 2021 | 7 Jun 2021 | - | - |
| Joanne Elizabeth Stimpson | Director | 12 Feb 1997 | 1 Feb 2001 | British | 64 years |
| John George Lillywhite | Director | 2 Jan 1996 | 12 Feb 1997 | English | 86 years |
| John Harrison | Director | 10 Feb 1995 | 16 May 1997 | British | 83 years |
| Linda Margaret Dryden | Secretary | 1 Apr 2007 | 6 Jun 2007 | British | - |
| Lindsay Anne Hawkins | Secretary | 8 Dec 2011 | 31 Jan 2014 | - | - |
| Mark Joseph Baker | Director | 1 May 2006 | 23 Sept 2009 | British | 57 years |
| Martin Neville Owen | Director | 22 Feb 2001 | 28 Jun 2002 | British | 79 years |
| Martin Provoost | Director | 8 Jun 2010 | 1 Oct 2011 | British | 61 years |
| Nicholas Antony Cullen | Director | 2 Nov 2004 | 8 Dec 2016 | British | 67 years |
| Nicola Jeanna Morgan | Secretary | 19 Jan 2018 | 15 Jan 2021 | - | - |
| Ninian Piers Darby Eadie | Director | 31 Dec 1991 | 12 Feb 1997 | British | 89 years |
| Patrick Michael Stewart | Director | 23 Oct 2002 | 30 Jun 2011 | British | 77 years |
| Paul Christopher Brown | Director | 1 Nov 2023 | 20 Jun 2024 | British | 49 years |
| Paula Ann Evans | Secretary | 6 Jun 2007 | 8 Dec 2011 | British | - |
| Paula Ann Evans | Secretary | 31 Jan 2014 | 15 Oct 2015 | - | - |
| Peter Frederick Hutchinson | Director | 9 Sept 2002 | 31 Jul 2008 | British | 72 years |
| Peter Robert Earl | Director | 15 Aug 2000 | 28 Jun 2002 | British | 66 years |
| Rachel Louise Holmes | Secretary | 7 Jun 2021 | 24 Jun 2025 | - | - |
| Richard Andrew James Allnutt | Director | 15 Sept 2003 | 15 Oct 2005 | British | 74 years |
| Robert Anthony Coe | Director | 31 Dec 1991 | 10 Sept 1998 | British | 80 years |
| Robert Anthony Coe | Secretary | 10 Sept 1998 | 30 Apr 2002 | British | - |
| Roderick Frank Scott | Director | 10 Sept 1998 | 26 Feb 2002 | British | 79 years |
| Roderick Frank Scott | Secretary | 31 Dec 1991 | 10 Sept 1998 | British | - |
| Roger John Leek | Director | 9 Nov 2001 | 15 Sept 2003 | British | 77 years |
| Ross Russell Limited | Corporate Director | 20 Jun 2012 | 13 Nov 2015 | United Kingdom | - |
| Stefan Riesenfeld | Director | 29 Nov 1996 | 30 Apr 1999 | American | 78 years |
| Stephen David Clayton | Director | 15 Sept 2003 | 1 May 2006 | British | 62 years |
| Thomas Keith Todd | Director | 31 Dec 1991 | 2 Jan 1996 | British | 73 years |