| Adam John Applegarth | Director | 1 May 2005 | 29 Oct 2007 | British | 63 years |
| Brian David Taylor | Director | 21 Apr 1992 | 31 Dec 2000 | British | 78 years |
| Claire Thomas | Director | 1 Aug 2019 | 1 Feb 2020 | British | 56 years |
| David George Bryant | Director | 21 Apr 1992 | 23 Apr 2009 | British | 73 years |
| David George Fossett Thompson | Director | 10 Aug 1999 | 19 Apr 2012 | British | 71 years |
| David Jenkinson | Director | 13 Dec 2013 | 20 Sept 2020 | British | 58 years |
| Duncan Henry Davidson | Director | 21 Apr 1992 | 20 Apr 2006 | British | 84 years |
| Geoffrey Grewer | Director | 21 Apr 1992 | 31 Dec 2001 | British | 83 years |
| Geoffrey Grewer | Secretary | 21 Apr 1992 | 1 May 2002 | British | - |
| Gerald Neil Francis | Secretary | 1 May 2002 | 30 Sept 2016 | British | - |
| Henry George Littlefair | Director | 21 Apr 1992 | 31 Dec 2000 | British | 94 years |
| Ian Hamish Leslie Melville | Director | 1 Jun 1995 | 22 Apr 2010 | British | 81 years |
| Jason Michael Windsor | Director | 11 Jul 2022 | 1 Sept 2023 | British | 53 years |
| Jeffrey Fairburn | Director | 1 Jun 2009 | 31 Dec 2018 | British | 59 years |
| Joanna Ruth Place | Director | 1 Apr 2020 | 26 Apr 2023 | British | 63 years |
| John Chippendale Lindley Keswick | Director | 21 Apr 1992 | 20 Apr 2006 | British | 85 years |
| John Millar | Director | 1 Feb 1993 | 30 Apr 2006 | British | 81 years |
| John White | Director | 21 Apr 1992 | 21 Apr 2011 | British | 74 years |
| Jonathan Richard Davie | Director | 1 Jan 2010 | 14 Dec 2017 | English | 79 years |
| Marion Jane Sears | Director | 8 Jan 2013 | 30 Jun 2020 | British | 63 years |
| Mark Robin Preston | Director | 9 Jan 2012 | 14 Apr 2016 | British | 57 years |
| Michael Hugh Killoran | Director | 4 Jan 1998 | 14 Jan 2022 | British | 64 years |
| Michael John Allen | Director | 21 Apr 1992 | 31 Dec 2000 | British | 80 years |
| Michael Peter Farley | Director | 21 Apr 1992 | 18 Apr 2013 | British | 72 years |
| Nicholas Hugh Tremayne Wrigley | Director | 1 Feb 2006 | 26 Feb 2018 | British | 70 years |
| Nigel Gordon Mills | Director | 4 Apr 2016 | 1 May 2025 | British | 70 years |
| Nigel Peter Greenaway | Director | 8 Jan 2013 | 14 Apr 2016 | British | 65 years |
| Peter Simon Litherland | Director | 3 Apr 2017 | 26 Apr 2023 | British | 61 years |
| Rachel Elizabeth Kentleton | Director | 24 Jun 2015 | 31 Aug 2021 | British | 56 years |
| Richard Colin Neil Davidson | Director | 19 Jan 2004 | 18 Apr 2013 | British | 74 years |
| Richard John Pennycook | Director | 14 Mar 2008 | 14 Apr 2016 | British | 61 years |
| Sarah Katherine Davidson | Director | 21 Apr 1992 | 1 Jun 1995 | British | 83 years |
| Shirine Khoury-haq | Director | 1 Jul 2021 | 30 Sept 2024 | British | 54 years |