| Angus Gordon Eaton | Director | 5 Mar 2015 | 27 Apr 2018 | British | 58 years |
| Bridget Fiona Mcintyre | Director | 31 Mar 2001 | 9 Jun 2005 | British | 65 years |
| Caroline Francis Ramsay | Director | 23 Jan 2004 | 26 Apr 2004 | British | 64 years |
| Clifford James Abrahams | Director | 26 Jul 2010 | 13 Aug 2013 | British | 59 years |
| Cornelis Antonius Carolus Maria Schrauwers | Director | 1 Dec 1998 | 14 Nov 2000 | Dutch | 79 years |
| David Gavin Macdonald | Director | 1 Feb 1997 | 14 Nov 2000 | British | 73 years |
| David John Ramsay Mcmillan | Director | 9 May 2006 | 23 Aug 2010 | British | 60 years |
| David Kenneth Watson | Director | 5 May 2009 | 31 Mar 2010 | British | 67 years |
| David Philip Carey | Director | 11 Nov 2021 | 17 Oct 2022 | British | 55 years |
| Donald James Mcpherson | Secretary | 16 May 1992 | 18 Mar 1994 | British | - |
| Fernley Keith Dyson | Director | 16 Jan 2008 | 30 Apr 2009 | British | 61 years |
| Gareth John Hemming | Director | 27 Apr 2018 | 17 Aug 2020 | British | 56 years |
| Ian Russell Foy | Director | 24 Nov 2014 | 31 Dec 2014 | British | 60 years |
| Janice Deakin | Director | 1 Apr 2010 | 13 Aug 2013 | British | 59 years |
| John Robert Kitson | Director | 7 Jul 2008 | 31 Mar 2010 | British | 66 years |
| John Seaton | Director | 14 Mar 2006 | 30 Apr 2008 | British | 68 years |
| Julian Ray Woodford | Director | 13 Aug 2013 | 24 Nov 2014 | British | 63 years |
| Lindsey Claire Rix | Director | 24 Nov 2014 | 15 Jun 2017 | British | 46 years |
| Mark Steven Hodges | Director | 31 Mar 2001 | 9 May 2006 | British | 61 years |
| Michael Nicholas Biggs | Director | 14 Nov 2000 | 31 Mar 2001 | British | 74 years |
| Nigel George Lister | Director | 16 May 1992 | 31 Dec 1997 | British | 91 years |
| Patrick Colm Peter Tiernan | Director | 15 Jun 2017 | 27 Apr 2018 | Irish | 51 years |
| Patrick Joseph Robert Snowball | Director | 14 Nov 2000 | 14 Mar 2006 | British | 76 years |
| Paul Anthony Found | Director | 1 Dec 1998 | 14 Nov 2000 | British | 78 years |
| Paul Senior | Director | 8 Oct 2020 | 7 Dec 2022 | British | 53 years |
| Philip Charles Easter | Director | 9 Jun 2005 | 14 Mar 2006 | British | 73 years |
| Philip Martin White | Secretary | 30 Dec 1994 | 30 Nov 1998 | British | - |
| Philip Spencer Bayles | Director | 13 Aug 2013 | 24 Nov 2014 | British | 59 years |
| Philip Spencer Bayles | Director | 27 Apr 2018 | 17 May 2021 | British | 59 years |
| Richard Andrew Whitaker | Director | 1 Jan 1998 | 30 Nov 1998 | British | 74 years |
| Richard Andrew Whitaker | Secretary | 19 Mar 1994 | 30 Dec 1994 | British | - |
| Robert Avisson Scott | Director | 16 May 1992 | 1 Feb 1997 | Australian | 84 years |
| Robert Newton | Director | 16 May 1992 | 14 Nov 2000 | British | 76 years |
| Sarah Louise Dinley | Director | 18 Aug 2020 | 30 Nov 2023 | British | 57 years |
| Scott Egan | Director | 14 Mar 2006 | 2 Oct 2007 | British | 55 years |
| Sean Egan | Director | 1 Apr 2010 | 20 Dec 2011 | Irish | 70 years |
| Sean Egan | Director | 1 Jan 2007 | 10 May 2007 | Irish | 70 years |
| Simon Peter Warsop | Director | 2 Jun 2021 | 17 Dec 2021 | British | 57 years |
| Stephen Treloar | Director | 10 Jan 2012 | 4 Nov 2015 | British | 58 years |
| Thomas James Latter | Director | 8 Jun 2018 | 8 Oct 2020 | British | 49 years |
| Thomas Roberts | Director | 16 May 1992 | 30 Nov 1992 | British | 96 years |
| Tracey Louise Gration | Director | 26 Jul 2022 | 16 May 2025 | British | 57 years |