| Alan Macdonald | Director | 7 Aug 1995 | 24 Dec 2004 | British | 70 years |
| David Philip George Peters | Director | 15 Aug 1994 | 31 Mar 1995 | British | 74 years |
| Eric Graham Varley | Director | 30 Nov 1991 | 25 Mar 1999 | British | 94 years |
| Harald Hvalvik | Director | 1 Nov 2005 | 5 Aug 2011 | Norwegian | 70 years |
| James Talbot Sutherland | Director | 1 Apr 2018 | 18 Mar 2020 | British | 66 years |
| John Roger Hollis | Director | 20 Dec 2005 | 21 Nov 2019 | British | 67 years |
| Jukka Havia | Director | 4 Jan 2021 | 31 Dec 2023 | Finnish | 58 years |
| Justin William Joseph Salisbury | Director | 30 Nov 1991 | 18 Mar 2020 | British | 70 years |
| Justin William Joseph Salisbury | Secretary | 30 Nov 1991 | 18 Mar 2020 | British | - |
| Nicholas John Scotland | Director | 30 Oct 2003 | 1 Nov 2005 | British | 82 years |
| Peter Smith | Director | 18 Sept 2009 | 1 Apr 2018 | British | 67 years |
| Richard Stuart Brown | Director | 7 Feb 2000 | 20 Dec 2005 | British | 73 years |
| Robert Douglas Reginald Field | Director | 1 May 2014 | 31 May 2021 | British | 59 years |
| Tapio Juhani Kolunsarka | Director | 18 Mar 2020 | 31 Jan 2023 | Finnish | 51 years |
| Teifion Luther George Salisbury | Director | 30 Nov 1991 | 1 Apr 2004 | British | 65 years |
| Tuomo Kalevi Valkonen | Director | 18 Mar 2020 | 4 Jan 2021 | Finnish | 59 years |
| William George Salisbury | Director | 30 Nov 1991 | 11 Jun 2007 | British | 102 years |