| Andrew Stephen Pike | Secretary | 4 Apr 1997 | 24 May 1999 | British | - |
| Angus Harvey Taylor | Secretary | 29 Oct 1991 | 3 Aug 1993 | British | - |
| Anthony John Taylor | Secretary | 5 Aug 1993 | 4 Apr 1997 | British | - |
| Antonio Afonso De Pinto Galvao Lucas | Director | 13 May 1993 | 22 Mar 1999 | Portugese | 82 years |
| Antonio Jose Rodrigues Frutuoso De Melo | Director | 29 Oct 1991 | 4 Dec 1992 | Portuguese | 78 years |
| Carlos Pedro Brandao De Melo De Sousa E Brito | Director | 29 Oct 1991 | 4 Dec 1992 | Portuguese | 84 years |
| Diogo Patrico De Melo Peresrelo | Director | 22 Mar 1999 | 18 Jul 2002 | Portuguese | 58 years |
| Geoffrey Ronald Bull | Director | 24 May 1999 | 8 Apr 2011 | British | 73 years |
| Graham Malcolm Comrie Dewar | Director | 13 May 1993 | 24 Jun 1998 | Portugese | 84 years |
| Graham Richard William Gillespie | Director | 31 Mar 1998 | 28 May 1999 | British | 73 years |
| John Andrew Bailey | Director | 29 Oct 1991 | 24 Jun 1998 | British | 81 years |
| Kevin John Sims | Director | 8 Apr 2011 | 11 Dec 2014 | British | 65 years |
| Maria Joao De Oliverira Ricou Mora Do Vale | Director | 24 Jun 1998 | 18 Jul 2002 | Portuguese | 67 years |
| Michael John Choules | Director | 1 Feb 2017 | 30 Sept 2018 | British | 66 years |
| Peter Graham Aspden | Director | 29 Oct 1991 | 30 Apr 1998 | British | 75 years |
| Philip Daniel Eric Bergqvist | Director | 29 Oct 1991 | 18 Jan 1993 | British | 95 years |
| Richard Howson Jr | Director | 29 Oct 1991 | 24 Feb 1993 | American | 106 years |
| Robin John Edmeades | Director | 29 Oct 1991 | 24 Jun 1998 | British | 80 years |
| Stephen Philip Hardy | Director | 8 Apr 2011 | 6 Jun 2016 | British | 78 years |
| Stephen Philip Hardy | Secretary | 24 May 1999 | 6 Jun 2016 | British | - |