| Alun Morton Jones | Director | 16 Nov 1998 | 30 Apr 2004 | British | 73 years |
| Bryan David Myers | Director | 1 Sept 2004 | 31 Jan 2013 | British | 66 years |
| Christopher Martin Burgess | Director | 29 Sept 1991 | 27 Jan 1995 | British | 80 years |
| Christopher William Roberts Hayden | Director | 30 Apr 2004 | 30 Jun 2011 | British | 65 years |
| Clive Charles Page | Secretary | 30 Apr 2004 | 1 Jun 2015 | British | - |
| Clive Henry Bailey | Director | 1 Apr 2015 | 8 Aug 2018 | British | 58 years |
| Corey Martin Macgillivray | Director | 30 Mar 2011 | 8 Aug 2018 | American | 58 years |
| David Ian Thorley | Director | 6 Apr 2006 | 5 Aug 2007 | British | 70 years |
| David Lowe | Director | 1 Sept 2011 | 8 Aug 2018 | British | 57 years |
| Derek Potts | Director | 27 Jan 1995 | 31 Jan 1997 | British | 67 years |
| Eric Jackson | Director | 29 Sept 1991 | 27 Jan 1995 | British | 101 years |
| Graham Paul Hughes | Secretary | 30 Apr 2004 | 17 Jun 2009 | Other | - |
| Harold Streets | Director | 29 Sept 1991 | 20 Sept 1995 | English | 79 years |
| John Bernard Cowper | Director | 16 Nov 1998 | 17 Apr 2000 | British | 68 years |
| John Muir Ritchie | Director | 27 Jan 1995 | 16 Nov 1998 | British | 82 years |
| John Raymond Witt | Director | 1 Feb 1997 | 12 Jun 1998 | Canadian | 62 years |
| Kenneth Checkley | Director | 18 Apr 2000 | 27 Aug 2004 | British | 72 years |
| Lewis Bernard Mack | Director | 29 Sept 1991 | 20 Sept 1995 | British | 78 years |
| Lewis Bernard Mack | Secretary | 29 Sept 1991 | 31 Jan 1995 | British | - |
| Mark C Turner | Director | 1 Jul 2011 | 31 Mar 2015 | American | 56 years |
| Matheson & Co Limited | Corporate Secretary | 31 Jan 1995 | 30 Apr 2004 | - | - |
| Nigel Martin Parker | Director | 21 Dec 2004 | 3 Feb 2006 | British | 68 years |
| Paul Alexander Macniven | Director | 25 Jul 2013 | 31 Oct 2016 | British | 60 years |
| Paul Roger Kiernan | Director | 24 Mar 2009 | 31 Aug 2011 | British | 60 years |
| Peter Beynon | Director | 12 Jun 1998 | 16 Nov 1998 | British | 68 years |
| Ryan Jason Anderson | Director | 24 Mar 2009 | 30 Jun 2011 | Us Citizen | 52 years |
| Stephen Glenn Hood | Director | 27 Jan 2015 | 18 Sept 2017 | British | 62 years |
| Steven Wyn Williams | Director | 16 Nov 2007 | 31 Dec 2013 | British | 75 years |
| Stuart Donald Kerr | Director | 1 Jan 2014 | 19 Dec 2014 | British | 73 years |
| Terry Christopher Watkins | Director | 29 Sept 1991 | 20 Sept 1995 | British | 81 years |