| Alan John Winchester | Director | 28 Apr 2015 | 1 Oct 2018 | British | 68 years |
| Brian Macaulay | Director | 1 Mar 2021 | 16 Aug 2024 | British | 55 years |
| Brian William Cameron | Director | 16 Nov 1999 | 30 Jun 2000 | British | 67 years |
| Dennis David Alexander Malcolm | Director | 7 Feb 1997 | 8 Jun 1999 | British | 80 years |
| Dennis David Alexander Malcolm | Director | 15 Aug 2006 | 19 Feb 2019 | British | 80 years |
| Derek Neil Sinclair | Director | 15 Aug 2006 | 31 Dec 2021 | British | 60 years |
| Edward Mcshane | Director | 7 Dec 1998 | 14 Nov 2001 | British | 54 years |
| Edward Wayne Mayrose | Director | 1 May 2017 | 3 Oct 2019 | American | 53 years |
| Elaine Blake | Director | 14 Nov 2001 | 30 Sept 2004 | British | 55 years |
| Ewen Alexander Fraser | Director | 1 Oct 2018 | 1 Mar 2021 | British | 67 years |
| Fiona Mary Jones | Director | 30 Apr 2014 | 31 Aug 2017 | British | 58 years |
| George Nichol Bathgate | Director | 7 Feb 1997 | 19 May 1998 | British | 83 years |
| Graham Peter Macwilliam | Director | 9 Aug 2006 | 27 Aug 2025 | British | 61 years |
| Graham Peter Macwilliam | Director | 18 Jul 2000 | 9 Aug 2006 | British | 61 years |
| Graham Robert Hutcheon | Director | 12 Feb 1998 | 27 Nov 2003 | British | 63 years |
| Iain Campbell | Director | 30 Sept 2004 | 30 Apr 2014 | British | 71 years |
| Iain Macgregor Lochhead | Director | 13 Apr 2011 | 30 Apr 2014 | British | 64 years |
| James Ritchie Logan | Director | 31 Jul 1996 | 7 Dec 1998 | British | 85 years |
| John Graham Watson | Director | 8 Jun 1999 | 13 Dec 2000 | British | 80 years |
| Jonathan Andrew Fuller | Director | 17 Sept 1998 | 19 Nov 1999 | British | 65 years |
| Kevin Donald Sutherland | Director | 31 Aug 2017 | 1 Oct 2022 | British | 52 years |
| Maclay Murray & Spens Llp | Corporate Nominee Secretary | 4 May 1994 | 15 Aug 2006 | United Kingdom | - |
| Maclay Murray & Spens Llp | Corporate Nominee Secretary | 15 Aug 2006 | 10 May 2018 | United Kingdom | - |
| Niall Mcall Macgregor | Director | 19 May 1998 | 3 Jul 2000 | British | 81 years |
| Paul Hardisty | Director | 3 Jul 2000 | 27 Apr 2001 | British | 67 years |
| Paul Telford Lobar | Director | 30 Apr 2014 | 26 May 2024 | British | 59 years |
| Robin Peter Gillies | Director | 27 Nov 2003 | 15 Aug 2006 | British | 69 years |
| Rune Molvik | Director | 1 Oct 2022 | 31 Mar 2024 | Norwegian | 57 years |
| Sean Priestley | Director | 31 Dec 2021 | 31 Jan 2024 | British | 48 years |
| Vindex Limited | Corporate Nominee Director | 4 May 1994 | 31 Jul 1996 | United Kingdom | - |
| Vindex Services Limited | Corporate Nominee Director | 4 May 1994 | 31 Jul 1996 | United Kingdom | - |
| William James Mcgregor | Director | 31 Jul 1996 | 1 Feb 1998 | British | 76 years |
| William James Walker | Director | 21 Nov 2008 | 6 Apr 2017 | British | 81 years |
| William Ramsay Lamb | Director | 1 Jan 2001 | 28 Apr 2015 | British | 68 years |
| William Stuart Robertson | Director | 7 Feb 1997 | 12 Feb 1998 | British | 90 years |
