| Alan Cowan | Director | 20 Jun 2005 | 14 Jun 2019 | British | 53 years |
| Allison Carole Chambers | Director | 29 Jul 2021 | 16 Nov 2022 | Irish | 58 years |
| Christopher Brian Close | Director | 31 Dec 1992 | 7 Jun 1999 | British | 72 years |
| Christopher Peter Lester | Director | 31 Dec 1992 | 7 Jun 1999 | British | 82 years |
| Claire Louise Hughes | Director | 20 Jun 2005 | 31 Mar 2013 | British | 58 years |
| Clare Louise Lovett | Director | 21 Nov 2013 | 29 Jul 2021 | British | 56 years |
| Edward Charles Hayes | Director | 12 May 1997 | 7 Jun 1999 | British | 63 years |
| Edward Peter Woore | Director | 20 Jun 2005 | 21 Nov 2013 | British | 63 years |
| Fiona Margaret Franklin | Director | 12 May 1997 | 7 Jun 1999 | British | 66 years |
| Fiona Marion Treadwell | Director | 20 Jun 2005 | 4 Jan 2022 | British | 59 years |
| Geoffrey David Bernstein | Director | 14 Jun 1999 | 20 Jun 2005 | British | 74 years |
| Gia Natalie Rhone | Director | 1 Jan 2017 | 30 Aug 2019 | British | 50 years |
| Ian Martin Pittaway | Director | 12 May 1997 | 7 Jun 1999 | British | 70 years |
| Ian Thomas Mattioli | Director | 20 Jun 2005 | 21 Nov 2013 | British | 64 years |
| Ian Thomas Mattioli | Secretary | 20 Jun 2005 | 21 Nov 2013 | British | - |
| Jeremy James Rixon | Director | 29 Jul 2021 | 31 Jul 2024 | British | 74 years |
| Jerome Simon Melcer | Director | 1 Jul 1999 | 17 Oct 2000 | British | 60 years |
| Joan Anthea Symonds | Secretary | 8 Mar 2004 | 20 Jun 2005 | British | - |
| John Westcott Selley | Director | 31 Dec 1992 | 10 Sept 1997 | British | 91 years |
| Jonathan Berman | Director | 31 Dec 1992 | 7 Jun 1999 | British | 78 years |
| Jonathan Salis Daiches Seres | Director | 31 Dec 1992 | 7 Jun 1999 | British | 81 years |
| Julie Patricia Sebastianelli | Director | 29 Jul 2021 | 9 Apr 2024 | British | 63 years |
| Kam Kaur Hayre | Director | 10 Dec 2018 | 30 Aug 2019 | British | 53 years |
| Lianne Emma Harrison | Director | 1 Jan 2017 | 30 Apr 2025 | British | 39 years |
| Louise Julie Keatley | Director | 19 Oct 2006 | 29 Jul 2021 | British | 50 years |
| Mark Antony Smith | Director | 20 Jun 2005 | 22 Nov 2018 | British | 56 years |
| Mark Barclay Greenlees | Director | 31 Dec 1992 | 7 Jun 1999 | British | 72 years |
| Mark Richard Gordon Sapstead | Director | 4 Jul 2008 | 29 Jul 2021 | British | 49 years |
| Michael Gerard Galway | Director | 29 Jul 2021 | 16 Nov 2022 | Irish | 49 years |
| Murray Beveridge Smith | Director | 20 Jun 2005 | 21 Nov 2013 | British | 57 years |
| Nichola Dax | Director | 4 Jul 2008 | 30 Dec 2016 | British | 59 years |
| Nicholas James Couldrey | Director | 31 Dec 1992 | 7 Jun 1999 | British | 75 years |
| Patrick John Sanderson | Director | 1 Jan 2017 | 3 Jul 2025 | British | 59 years |
| Pauline Elizabeth Sibbit | Director | 12 May 1997 | 7 Jun 1999 | British | 65 years |
| Pauline Elizabeth Sibbit | Secretary | 31 Dec 1992 | 7 Jun 1999 | British | - |
| Peter James Docking | Director | 12 May 1997 | 7 Jun 1999 | British | 65 years |
| Philip Norman Smith | Director | 14 Jun 1999 | 20 Jun 2005 | British | 73 years |
| Philip Norman Smith | Secretary | 14 Jun 1999 | 8 Mar 2004 | British | - |
| Robert Woods | Director | 20 Jun 2005 | 21 Nov 2013 | British | 72 years |
| Sallyann Bundock | Director | 20 Jun 2005 | 7 Nov 2019 | British | 56 years |
| Sarah Jane Tier | Director | 12 May 1997 | 7 Jun 1999 | British | 66 years |
| Sarah Louise Joshi | Director | 21 Nov 2013 | 29 Jul 2021 | British | 46 years |
| Thomas Daniel Gough | Director | 1 Jan 2017 | 2 Jan 2023 | British | 40 years |