| David Jenkinson | Director | 1 May 2016 | 20 Sept 2020 | British | 58 years |
| Geoffrey Grewer | Director | 19 Mar 2001 | 1 May 2002 | British | 83 years |
| Geoffrey Grewer | Secretary | 18 May 2001 | 20 Jul 2001 | British | - |
| Gerald Neil Francis | Director | 1 May 2002 | 30 Sept 2016 | British | 69 years |
| Jeffrey Fairburn | Director | 1 Jan 2010 | 31 Dec 2018 | British | 59 years |
| Laurence Edwin Garner | Director | 22 Jan 1999 | 1 Oct 2001 | British | 78 years |
| Laurence Edwin Garner | Secretary | 22 Jan 1999 | 18 May 2001 | British | - |
| Michael Hugh Killoran | Director | 19 Mar 2001 | 14 Jan 2022 | British | 64 years |
| Michael Peter Farley | Director | 1 Jan 2010 | 18 Apr 2013 | British | 72 years |
| Nicholas Howard Smith | Director | 15 Dec 1998 | 11 May 2001 | British | 68 years |
| Nicholas Vincent Somerset Paravicini | Director | 8 Mar 1993 | 28 Oct 1996 | British | 88 years |
| Nigel Peter Greenaway | Director | 18 Apr 2013 | 30 Apr 2016 | British | 65 years |
| Patrick Docherty | Director | 8 Mar 1993 | 14 Sept 1993 | British | 83 years |
| Patrick Docherty | Secretary | 8 Mar 1993 | 10 Jan 1994 | British | - |
| Raymond St John Murphy | Secretary | 14 Sept 1993 | 28 Oct 1996 | British | - |
| Richard Miles Cordy | Director | 3 Oct 2000 | 14 Jun 2001 | British | 67 years |
| Richard Paul Stenhouse | Director | 30 Sept 2016 | 30 Sept 2021 | British | 54 years |
| Stewart Antony Baseley | Director | 28 Oct 1996 | 26 Jun 1998 | British | 67 years |
| Walter Louis Farndon Broadbent | Director | 28 Oct 1996 | 22 Jan 1999 | British | 62 years |
| Walter Louis Farndon Broadbent | Secretary | 28 Oct 1996 | 22 Jan 1999 | British | - |