| Alan Robert Davidson | Director | 23 Jul 2014 | 31 Oct 2018 | British | 57 years |
| Alan Ronald Cook | Director | 31 Oct 2001 | 28 Jun 2002 | British | 72 years |
| Alison Kirk | Director | 16 Mar 2001 | 30 Aug 2001 | British | 73 years |
| Andrew Michael Crossley | Director | 20 Jul 2007 | 6 Jun 2013 | British | 69 years |
| Anthony Simon Echalaz Allen | Director | 12 Dec 2008 | 31 Dec 2009 | British | 68 years |
| Bruce Watson Minto | Nominee Director | 4 Jun 1997 | 17 Jun 1997 | British | - |
| Catherine Ellen Lewis | Director | 9 Dec 2009 | 31 May 2016 | British | 61 years |
| Clare Jane Bousfield | Director | 1 Apr 2019 | 6 Dec 2021 | British | 57 years |
| David George Green | Secretary | 23 Sept 1997 | 18 Nov 1998 | British | - |
| David John Belsham | Director | 19 Mar 2010 | 7 Jul 2014 | British | 66 years |
| Dm Company Services Limited | Corporate Nominee Secretary | 4 Jun 1997 | 17 Jun 1997 | United Kingdom | - |
| Finbar Anthony O'dwyer | Director | 5 Jan 2009 | 24 May 2013 | Irish | 54 years |
| Gavin Macneill Stewart | Director | 23 Sept 1997 | 31 Dec 2000 | British | 66 years |
| Gregory Mark Wood | Director | 15 Aug 2003 | 18 Feb 2004 | British | 72 years |
| Heather Macdonald Logan | Director | 4 May 1999 | 15 Aug 2003 | British | 68 years |
| Istvan Antal Haasz | Director | 31 Mar 2009 | 15 Jan 2010 | British | 61 years |
| James Charles Mitchell | Director | 17 Jun 1997 | 30 Jun 2000 | British | 85 years |
| James Charles Mitchell | Secretary | 17 Jun 1997 | 23 Sept 1997 | British | - |
| James Stuart Martin | Director | 23 Sept 1997 | 31 Mar 1999 | British | 72 years |
| James White Jack | Director | 23 Sept 1997 | 30 Jul 2004 | British | 74 years |
| Jennifer Sirrelle Board | Director | 21 Nov 2006 | 27 Nov 2009 | British | 70 years |
| John Clark Betteridge | Director | 19 Mar 2010 | 31 Dec 2013 | British | 67 years |
| John Cowan | Director | 23 Sept 1997 | 16 Mar 2001 | British | 78 years |
| Kathryn Swindley | Director | 16 Mar 2006 | 28 Jul 2006 | British | 64 years |
| Kathryn Swindley | Director | 16 Mar 2001 | 31 Oct 2001 | British | 64 years |
| Kelvin Nunn | Director | 1 Mar 2007 | 29 Jul 2014 | British | 68 years |
| Kieran Mark Coleman | Director | 28 Jul 2006 | 15 Dec 2006 | Irish | 56 years |
| Maria Luisa Cassoni | Director | 23 Sept 1997 | 6 May 1998 | British | 74 years |
| Morag Helen Sheppard | Director | 16 Mar 2001 | 31 Oct 2001 | British | 70 years |
| Neil Anthony Berkett | Director | 15 Jul 2002 | 20 Jun 2003 | New Zealander | 70 years |
| Nicolas John Hayter | Director | 30 Jul 2004 | 14 Nov 2005 | British | 60 years |
| Paul David Cooper | Director | 19 Jul 2021 | 6 May 2022 | British | 53 years |
| Prudential Group Secretarial Services Limited | Corporate Secretary | 7 Jun 2002 | 4 Oct 2019 | United Kingdom | - |
| Richard Charles Everett | Director | 15 Aug 2003 | 19 May 2006 | British | 60 years |
| Robert David Maxwell Marshall | Director | 16 Mar 2001 | 31 Oct 2001 | British | 74 years |
| Robert Walker | Secretary | 18 Nov 1998 | 17 Dec 1999 | British | - |
| Roddy Thomson | Director | 1 Apr 2019 | 27 Apr 2021 | British | 45 years |
| Roderick Lawrence Bruce | Nominee Director | 4 Jun 1997 | 17 Jun 1997 | British | 77 years |
| Rosemary Harris | Director | 26 May 2006 | 2 Feb 2007 | British | 67 years |
| Roy Macdonald Nicolson | Director | 17 Jun 1997 | 31 Dec 2000 | British | 81 years |
| Sandy Mcdonald | Director | 16 Mar 2001 | 31 Oct 2001 | British | 75 years |
| Shali Vasudeva | Director | 27 Jun 2016 | 26 Jan 2017 | British | 56 years |
| Simon Moffatt | Director | 27 Jun 2016 | 1 Apr 2019 | British | 56 years |
| Timothy James William Tookey | Director | 15 Aug 2003 | 16 Mar 2006 | British | 63 years |
| Tony Lee | Secretary | 5 Feb 2001 | 7 Jun 2002 | British | - |
| Tulsi Ratakonda Naidu | Director | 19 Mar 2010 | 31 May 2016 | Indian | 52 years |
| Vanessa Frances Ruparel | Secretary | 17 Dec 1999 | 5 Feb 2001 | British | - |