| Adam Paul Rutherford | Secretary | 1 Oct 2007 | 1 Oct 2007 | British | - |
| Alan James Dunstan | Director | 31 Jul 1995 | 31 Mar 2000 | British | 78 years |
| Alan John Frost | Director | 26 Feb 1993 | 30 Jun 1998 | British | 82 years |
| Alan Victor Twigg | Director | 30 Nov 2007 | 31 Jan 2016 | British | 82 years |
| Amanda Helen Bowe | Director | 31 Aug 2018 | 6 Jun 2019 | British | 58 years |
| Amish Jayant Dashrath Desai | Director | 24 Feb 2012 | 30 Dec 2016 | British | 64 years |
| Andrew Moss | Director | 30 Dec 2016 | 31 Dec 2022 | British | 62 years |
| Andrew William Bartlett | Secretary | 1 Oct 2007 | 30 Dec 2016 | British | - |
| Ann Barrie Simmons | Secretary | 1 Oct 2001 | 19 Aug 2002 | British | - |
| Anthony James Woodward | Secretary | 26 Feb 1993 | 1 Oct 2001 | British | - |
| Anthony Wayne Snow | Director | 30 Dec 2016 | 15 Mar 2018 | British | 54 years |
| Benedict Craig | Director | 11 Feb 2011 | 30 Dec 2016 | British | 59 years |
| Bernd Amlung | Director | 24 Nov 2011 | 27 Jan 2016 | German | 58 years |
| Brid Mary Meaney | Director | 31 Dec 2022 | 23 Aug 2024 | Irish | 52 years |
| Christian Roy Torkington | Director | 1 Aug 2005 | 1 Oct 2007 | British | 64 years |
| Christopher David Evans | Director | 26 Feb 1993 | 31 Dec 2000 | British | 78 years |
| Christopher Guthrie Little | Director | 20 Nov 2007 | 30 Dec 2016 | British | 79 years |
| David Bruce | Director | 31 Jul 1995 | 29 Oct 1999 | British | 66 years |
| David Nicholas Woollett | Director | 4 Jan 2017 | 30 Jun 2018 | British | 50 years |
| David Richard Cheeseman | Director | 30 Dec 2016 | 31 Jan 2020 | British | 58 years |
| Dennis James Stacey | Director | 26 Feb 1993 | 4 Feb 2000 | British | 76 years |
| Diana Susan Miller | Director | 30 Dec 2016 | 6 Jun 2019 | British | 76 years |
| Farhat Shah | Secretary | 18 Oct 2004 | 29 Jun 2005 | British | - |
| George Thomas Yoxall | Director | 26 Feb 1993 | 14 Feb 1994 | British | 77 years |
| Ian David Thompson | Director | 4 Apr 2001 | 21 Oct 2003 | British | 72 years |
| James Mcconville | Director | 19 Aug 2002 | 1 Oct 2007 | British | 70 years |
| Jeremy Neil Fenton Taber | Director | 11 Mar 1999 | 28 Feb 2002 | British | 70 years |
| John Nicholas Temple | Director | 26 Feb 1993 | 4 Aug 1995 | British | 75 years |
| John Robert Lister | Director | 30 Dec 2016 | 6 Jun 2019 | British | 68 years |
| Jonathan Robson Pears | Director | 31 Aug 2018 | 6 Jun 2019 | British | 58 years |
| Leslie Michael Etheridge | Director | 30 Nov 2007 | 30 Dec 2016 | British | 75 years |
| Mandy Pamela Coxon | Director | 1 Oct 2007 | 30 Jun 2009 | British | 67 years |
| Michael David Green | Director | 8 Feb 1994 | 1 Oct 2007 | British | 75 years |
| Michael Merrick | Director | 18 Apr 2016 | 31 Mar 2017 | British | 66 years |
| Michael Norris Urmston | Director | 30 Dec 2016 | 6 Jun 2019 | British | 77 years |
| Nardeep Singh Sangha | Director | 1 Oct 2007 | 28 Oct 2011 | British | 59 years |
| Neil Charles Hardell Tointon | Director | 4 Apr 2001 | 30 Dec 2016 | British | 71 years |
| Nicholas Hugh Poyntz-wright | Director | 30 Dec 2016 | 6 Jun 2019 | British | 63 years |
| Nigel Waite | Director | 26 Feb 1993 | 31 Jan 1995 | British | 73 years |
| Paul Alexander Kenneth Laband | Director | 8 Feb 1994 | 17 Mar 1995 | British | 78 years |
| Paul Edward Barrow | Director | 31 Aug 2000 | 19 Dec 2000 | British | 76 years |
| Paul Steven Turrell | Director | 1 Oct 2007 | 2 Mar 2009 | British | 64 years |
| Peter Scott Mosley | Director | 7 Oct 1993 | 1 Feb 2000 | British | 78 years |
| Rakesh Kishore Thakrar | Director | 23 Jul 2018 | 6 Jun 2019 | British | 51 years |
| Rashid Shahid Zuberi | Director | 1 Oct 2007 | 24 Mar 2011 | British | 55 years |
| Rashid Shahid Zuberi | Director | 1 Mar 2013 | 13 May 2014 | British | 55 years |
| Richard Alan Rae | Director | 1 Oct 2007 | 6 Jan 2009 | British | 71 years |
| Richard David Houghton | Director | 31 Aug 2018 | 6 Jun 2019 | British | 61 years |
| Rizwan Sheriff | Director | 30 Jun 2020 | 30 Dec 2022 | British | 49 years |
| Robert Alexander Stirling | Director | 21 Dec 2007 | 30 Dec 2016 | British | 67 years |
| Ronald James Whatford | Director | 21 Oct 2003 | 1 Aug 2005 | British | 78 years |
| Stephen Andrew Clarke | Director | 30 Dec 2016 | 6 Jun 2019 | British | 72 years |
| Stephen Andrew Maran | Director | 26 Feb 1993 | 31 Dec 1999 | British | 86 years |
| Stuart William Clark | Director | 1 Jul 2009 | 11 Feb 2011 | British | 57 years |
| Susan Davidson Mcinnes | Director | 18 Apr 2018 | 31 Aug 2018 | British | 64 years |
| Tiina Le-seong Lee | Director | 15 Nov 2012 | 21 Sept 2015 | British | 58 years |
| Tracey Caroline Nicholls | Secretary | 19 Aug 2002 | 1 Oct 2007 | British | - |