| Alan Stephen Burton | Director | 24 May 2004 | 1 Aug 2004 | British | 71 years |
| Alexander George Anderson | Director | 28 Nov 1994 | 8 May 1998 | British | 83 years |
| Andrew Cheesewright | Director | 10 Jun 2005 | 16 Aug 2006 | British | 63 years |
| Andrew Cheesewright | Director | 22 Jun 2009 | 31 Mar 2012 | British | 63 years |
| Clive Paul Wood | Director | 9 Mar 1992 | 15 Apr 1994 | British | 70 years |
| David John Coke | Director | 22 Jun 2009 | 31 Dec 2019 | British | 68 years |
| David Laren Wells | Director | 18 Dec 2006 | 6 Sept 2012 | British | 58 years |
| David Longmore | Director | 6 Apr 1999 | 30 Nov 2001 | British | 80 years |
| Deborah Ann Morse | Director | 19 Mar 2014 | 1 Feb 2019 | British | 59 years |
| Denette Botchway | Secretary | 4 Sept 2014 | 16 Dec 2016 | - | - |
| Dietmar Townend | Director | 30 Sept 1994 | 28 Nov 1994 | British | 84 years |
| Elizabeth Anne Hobley | Secretary | 1 Jul 2001 | 5 Sept 2002 | British | - |
| James Patrick Michael Brosnan | Director | 9 Mar 1992 | 28 Nov 1994 | British | 84 years |
| John Peter Hamilton Merry | Director | 16 Aug 2006 | 18 May 2007 | British | 76 years |
| Kate Elizabeth Hudson | Secretary | 28 Sept 2009 | 19 Mar 2014 | - | - |
| Mark Vincent Dawson | Director | 16 Aug 2004 | 2 Jan 2009 | British | 70 years |
| Mausami Parekh | Secretary | 9 May 2017 | 9 Nov 2018 | - | - |
| Michael Berry Savory | Director | 9 Mar 1992 | 5 Apr 1999 | British | 83 years |
| Nandan Shanbhag | Secretary | 14 Jan 2019 | 26 Sept 2019 | - | - |
| Nicola Suzanne Black | Secretary | 6 Sept 2002 | 2 Jun 2005 | British | - |
| Nigel Barker | Secretary | 9 Mar 1992 | 30 Jun 2001 | British | - |
| Nigel John Deacon | Director | 6 Apr 1999 | 10 Jun 2005 | British | 79 years |
| Pauline Louise Mcquillan | Secretary | 23 Oct 2008 | 24 Sept 2009 | Other | - |
| Peter James Harvey | Secretary | 2 Jun 2005 | 23 Oct 2008 | Other | - |
| Philip Edward Dillnutt | Director | 6 Apr 1999 | 24 May 2004 | British | 72 years |
| Pragnaa Raju | Secretary | 25 Mar 2021 | 23 Nov 2022 | - | - |
| Richard Frederick Farrand | Director | 7 Dec 2001 | 24 May 2004 | British | 65 years |
| Robert James Hinton | Secretary | 19 Mar 2014 | 4 Sept 2014 | - | - |
| Roger Keith Mcgregor | Director | 18 May 2007 | 26 Sept 2008 | British | 78 years |
| Shreya Agarwal | Secretary | 9 Oct 2019 | 25 Mar 2021 | - | - |
| Stephen Charles Crockford | Director | 8 May 1998 | 5 Apr 1999 | British | 75 years |
| Stephen Graham Hoad | Director | 30 Sept 1994 | 28 Nov 1994 | British | 73 years |
| Stephen James Britain | Director | 24 May 2004 | 29 Dec 2006 | British | 57 years |
| Valerie Smart Farrell | Director | 14 Jan 2019 | 31 Aug 2021 | British | 65 years |
| Victoria Wales | Director | 16 Apr 2010 | 19 Mar 2014 | British | 50 years |
| Vivien Armson | Director | 22 Jun 2009 | 31 Mar 2010 | British | 68 years |