| Adrian Clive Spann | Director | 25 Oct 2023 | 23 Jan 2025 | British | 57 years |
| Andrew Bakewell | Director | 11 Jan 2001 | 15 Jan 2020 | British | 69 years |
| Angela Jane Winchester | Director | 15 Oct 2021 | 24 Oct 2024 | British | 58 years |
| Antonio Guilherme Ramos Gusmao | Director | 3 Aug 2022 | 28 Feb 2023 | Portuguese | 54 years |
| Antony Paul Miller | Director | 15 Apr 2014 | 1 Oct 2023 | British | 58 years |
| Charles Donald James Goddard | Director | 1 Feb 1994 | 18 May 1996 | British | 68 years |
| David John Batchelor | Director | 22 Sept 2000 | 13 Jul 2001 | British | 75 years |
| Geoffrey Smith | Director | 8 Feb 1992 | 31 Mar 1997 | British | 93 years |
| Gerard Jude Walsh | Director | 3 Sept 2014 | 15 Jan 2020 | British | 57 years |
| Graham John Pitcher | Director | 5 Nov 1999 | 31 Jan 2001 | British | 65 years |
| Grant Edwin Stobart | Director | 24 Jan 2018 | 17 Mar 2022 | British,south African | 62 years |
| James Scanlon | Director | 8 Feb 1992 | 17 Jun 1994 | British | 85 years |
| Jonathan Mark Taylor | Secretary | 27 Sept 2000 | 14 Dec 2006 | British | - |
| Jonathan Nicholas Jones | Director | 24 Jan 2018 | 28 Feb 2023 | British | 61 years |
| Louisa Elizabeth Voss | Secretary | 21 Dec 2007 | 10 Apr 2014 | British | - |
| Louise Michelle Cottam | Director | 1 Apr 2011 | 22 Aug 2014 | British | 57 years |
| Nadeem Ladha | Director | 15 Jan 2020 | 1 Sept 2023 | British | 46 years |
| Naomi Helen L'estrange | Director | 29 Apr 2014 | 1 Jul 2024 | British | 54 years |
| Neil Graham Mitchell | Director | 3 Sept 2014 | 3 Nov 2017 | British | 59 years |
| Nicholas James Boyes | Director | 11 Jan 2001 | 22 Aug 2014 | British | 66 years |
| Nigel Jones | Director | 3 Sept 2014 | 25 Jan 2022 | British | 55 years |
| Philip James Harrison | Secretary | 14 Dec 2006 | 21 Dec 2007 | British | - |
| Quintin John Heaney | Director | 29 Sept 2003 | 31 Dec 2004 | British | 69 years |
| Richard Blair Stephen Wood | Director | 22 Sept 2000 | 8 Jul 2003 | Irish | 62 years |
| Rodney Jeffreys | Secretary | 5 Nov 1999 | 22 Sept 2000 | British | - |
| Roger Alexander Cassells | Director | 25 Apr 1995 | 5 Nov 1999 | British | 66 years |
| Roger Alexander Cassells | Secretary | 8 Feb 1992 | 5 Nov 1999 | British | - |
| Terence Charles Monk | Director | 8 Feb 1992 | 5 Nov 1999 | British | 83 years |
| Terence Michael Dobing Williams | Director | 1 Oct 1996 | 1 Oct 1999 | British | 84 years |
| Theunis Viljoen | Director | 27 Sept 2000 | 19 Feb 2002 | South African | 63 years |
| Theunis Viljoen | Secretary | 22 Sept 2000 | 27 Sept 2000 | South Africa | - |
| Timothy David Morgan | Director | 16 Nov 2004 | 19 Jul 2010 | British | 71 years |
| Timothy Philip Culverhouse | Director | 8 Feb 1992 | 7 Apr 2014 | British | 71 years |