| Alvaro Gomez-reino Lago De Lanzos | Director | 24 Aug 2020 | 5 Aug 2022 | Spanish | 53 years |
| Charles Adair Anderson | Director | 29 Aug 1992 | 20 Oct 2006 | British | 80 years |
| David James Mackay | Director | 9 Feb 1996 | 9 May 2003 | British | 83 years |
| Dermot Julian Jenkinson | Director | 29 Aug 1992 | 30 Apr 1999 | British | 72 years |
| Eric Mulholland | Secretary | 29 Aug 1992 | 15 Mar 1999 | British | - |
| Eric Mulholland | Secretary | 16 Aug 2000 | 12 Mar 2012 | British | - |
| Frederick Ranald Noel-paton | Director | 26 Apr 1996 | 15 May 1998 | British | 88 years |
| Giles Robert Bryant Wilson | Director | 20 May 2016 | 24 Aug 2020 | British | 53 years |
| J M Secretaries Limited | Corporate Secretary | 15 Mar 1999 | 16 Aug 2000 | United Kingdom | - |
| James Douglas Scott Bennett | Director | 26 Apr 1996 | 31 Jul 1999 | British | 84 years |
| Martyn Robert Smith | Director | 5 Jul 1999 | 10 Sept 2002 | British | 71 years |
| Mervyn Walker | Director | 24 Aug 2020 | 5 Aug 2022 | Irish | 66 years |
| Michael Scott Mcgill | Director | 16 Aug 2000 | 28 Feb 2001 | British | 58 years |
| Patrick James Macdonald | Director | 9 May 2003 | 19 Mar 2007 | Scottish | 64 years |
| Paul Bernard Dollman | Director | 1 Oct 2002 | 17 May 2013 | British | 70 years |
| Paula Bell | Director | 10 Jun 2013 | 20 May 2016 | British | 59 years |
| Philip Harnden | Secretary | 13 Oct 2000 | 1 Oct 2001 | British | - |
| William Norman Gillies Smith | Director | 29 Aug 1992 | 8 Oct 1993 | British | 83 years |