| Alistair Martin | Director | 13 Jun 1997 | 1 Jun 1998 | British | 82 years |
| Andrew Christopher Bolter | Director | 3 Sept 2012 | 17 Apr 2013 | British | 56 years |
| Charles Fraser Norris | Secretary | 13 Jun 1997 | 16 May 2005 | British | - |
| David Antony Smith | Director | 29 Jul 2022 | 3 Oct 2023 | British | 41 years |
| David Baxter | Director | 1 Aug 1999 | 22 Apr 2004 | British | 74 years |
| Deborah Grimason | Director | 16 Apr 2013 | 20 Nov 2013 | British | 63 years |
| Gordon Morrison | Director | 13 Jun 1997 | 30 Mar 1999 | British | 75 years |
| Graham Samuel Greenhalgh | Director | 13 Jun 1997 | 1 May 2001 | British | 79 years |
| Graham Stanley Gould | Director | 13 Jun 1997 | 30 Mar 1999 | British | 83 years |
| Guy Franklin Young | Director | 1 Feb 2011 | 17 Apr 2013 | South African | 57 years |
| James Richard Stirk | Secretary | 16 May 2005 | 30 Nov 2012 | British | - |
| James Robert Brown Jamieson | Director | 1 Jun 1998 | 30 Jun 1999 | British | 75 years |
| Johannes Frederick Van Blerk Serfontein | Director | 1 Aug 2006 | 1 Feb 2011 | South African | 58 years |
| John Kerr Lindsay | Director | 15 Jul 2019 | 29 Jul 2022 | British | 65 years |
| John Richard Bradshaw | Secretary | 30 Nov 2012 | 16 Apr 2013 | British | - |
| Mark Wilson Joel | Director | 1 Aug 2011 | 17 Apr 2013 | British | 63 years |
| Martin Kenneth Riley | Director | 16 Apr 2013 | 4 May 2021 | British | 59 years |
| Md Directors Limited | Corporate Nominee Director | 27 May 1997 | 13 Jun 1997 | United Kingdom | - |
| Md Secretaries Limited | Corporate Nominee Secretary | 27 May 1997 | 13 Jun 1997 | United Kingdom | - |
| Paul Francis William Cottrell | Director | 16 Apr 2013 | 15 Jul 2019 | British | 60 years |
| Robert Ian Walter Boyd | Director | 17 Mar 2000 | 16 May 2005 | British | 81 years |
| Terence Robert Last | Director | 1 May 2001 | 20 Feb 2004 | British | 76 years |
| Terence Robert Last | Director | 16 May 2005 | 17 Apr 2013 | British | 76 years |
| Timothy Charles Jackson | Director | 16 May 2005 | 31 Jul 2006 | British | 74 years |