| Adrian John Lewis | Director | 31 Oct 2020 | 24 May 2023 | British | 47 years |
| Alan Murray Ferguson | Director | 20 Nov 1995 | 21 Sept 1999 | British | 68 years |
| Alison Jane Clarke | Director | 16 Dec 2016 | 18 Jun 2018 | British | 59 years |
| Amanda Brooks | Director | 23 Nov 1998 | 31 Mar 2007 | British | 61 years |
| Anton Clive Jeary | Director | 5 Feb 2013 | 4 Jul 2019 | British | 69 years |
| Bertrand Mallet | Director | 16 Dec 2016 | 29 Jan 2021 | French | 54 years |
| Charles Dorsey Mackay | Director | 24 May 1992 | 30 Jun 1996 | British | 86 years |
| Charles Duckworth | Director | 23 Nov 1998 | 10 Aug 1999 | British | 68 years |
| Charles Jules De Mol | Director | 24 May 1992 | 1 Jul 1993 | Belgian | 98 years |
| Charles Robert Edge | Director | 24 May 1992 | 10 Jul 1995 | British | 78 years |
| Christopher Frank Parker | Director | 18 Jan 2001 | 22 Jan 2013 | British | 67 years |
| Christopher Mark Davies | Director | 16 Dec 2016 | 29 Aug 2017 | British | 56 years |
| Derek Jesse Whittaker | Director | 24 May 1992 | 14 Jul 1994 | British | 97 years |
| Farheen Ahmad | Director | 1 Jul 2022 | 11 Sept 2023 | British | 39 years |
| Ian Douglas Allen | Director | 28 Feb 1994 | 20 Nov 1995 | Australian | 74 years |
| James Garry Campbell | Director | 24 May 1992 | 30 Jun 1996 | British | 81 years |
| John Charles Whiteman | Director | 24 May 1992 | 15 Jul 1999 | British | 76 years |
| John Michael Heathcote Light | Secretary | 24 May 1992 | 1 Oct 1993 | British | - |
| John Michael Heathcote Light | Secretary | 23 Jun 1995 | 22 Aug 1996 | British | - |
| John William James | Director | 21 Sept 1999 | 25 Apr 2000 | British | 85 years |
| John William James | Secretary | 1 Oct 1993 | 23 Jun 1995 | British | - |
| John William James | Secretary | 22 Aug 1996 | 25 Apr 2000 | British | - |
| Katherine Milliken | Director | 30 Jul 2007 | 24 Sept 2008 | British | 53 years |
| Kathryn Isabel Mecklenburgh | Director | 18 Jun 2018 | 31 Oct 2020 | British | 53 years |
| Leslie Charles James Taylor | Director | 24 May 1992 | 20 Jun 1995 | British | 92 years |
| Martin Peter Wheatley | Director | 27 Oct 1998 | 23 Nov 1998 | British | 67 years |
| Martin Peter Wheatley | Director | 1 Jun 2007 | 30 Jun 2020 | British | 67 years |
| Martin Peter Wheatley | Secretary | 25 Apr 2000 | 1 Jun 2007 | British | - |
| Maurice Rourke | Director | 24 May 1992 | 6 Feb 1996 | British | 78 years |
| Michael Jonathan Bowers | Director | 16 Dec 2016 | 1 Apr 2025 | British | 59 years |
| Paul Anthony Hewitt Wallwork | Director | 21 Sept 1999 | 1 Nov 2003 | British | 64 years |
| Penelope Claire Chapman | Director | 1 Jun 2007 | 31 Jul 2012 | British | 59 years |
| Peter Macgregor Sturrock | Director | 24 May 1992 | 3 Oct 1996 | Australian | 80 years |
| Peter Richard Caney | Director | 24 May 1992 | 28 Feb 1994 | Australian British | 80 years |
| Peter William Johnson | Director | 6 Mar 1995 | 21 Sept 1999 | British | 79 years |
| Reginald Frank Heath | Director | 24 May 1992 | 31 Aug 1994 | British | 85 years |
| Richard David Boult | Director | 27 Oct 1998 | 23 Nov 1998 | British | 61 years |
| Rodney Charles O'donoghue | Director | 24 May 1992 | 18 Jun 1998 | British | 88 years |
| Roy Charles Williams | Director | 25 Apr 2000 | 30 Jun 2007 | British | 79 years |
| Thomas Andrew Dale | Director | 4 Jul 2019 | 29 Jan 2020 | British | 40 years |