| Alan Roy Hawkins | Director | 22 Feb 1993 | 13 Jun 1997 | British | 72 years |
| Alice Read | Secretary | 6 Jul 2005 | 8 May 2006 | British | - |
| Alistair Nigel Duncan Jones | Director | 16 Oct 2011 | 31 Dec 2015 | British | 61 years |
| Arjun Kumar Bambawale | Director | 9 Jun 2009 | 20 Sept 2011 | Indian | 64 years |
| Bryan Frank Elliott | Director | 22 Feb 1993 | 15 May 2002 | British | 75 years |
| Carl Graeme Andrews | Director | 2 Apr 2019 | 8 Jun 2020 | British | 53 years |
| Christine Anne Coe | Director | 25 Jun 2003 | 1 Feb 2005 | British | 72 years |
| Christopher Derick Knowles | Director | 16 Oct 2011 | 3 Jul 2023 | British | 61 years |
| Cloe Nandlal | Secretary | 14 Nov 2014 | 29 Sept 2015 | - | - |
| Donald Thomas Smith | Director | 31 Jan 1995 | 1 Dec 2003 | British | 76 years |
| Emma Suzanne Ferley | Secretary | 19 Aug 2010 | 8 Feb 2012 | - | - |
| Frances Julie Niven | Secretary | 23 Jul 2004 | 6 Jul 2005 | British | - |
| Frederick Albert Whitehorn | Director | 1 Jul 1997 | 13 May 1999 | British | 72 years |
| Gary Woolfries | Director | 26 Jun 2002 | 16 Mar 2007 | British | 60 years |
| George William Bayer | Secretary | 5 Oct 2007 | 12 Sept 2008 | Other | - |
| Hauwa Kassim-momodu | Secretary | 9 Sept 2009 | 21 May 2010 | Other | - |
| Helena Margaret Clarke | Director | 1 Jul 1997 | 4 Sept 2000 | British | 65 years |
| James Keith Barton | Secretary | 22 Jul 1993 | 17 Jul 1995 | British | - |
| James Michael Martin | Director | 26 Jun 2002 | 30 Nov 2007 | British | 66 years |
| James Phillips | Director | 25 Jun 2003 | 5 Apr 2007 | British | 75 years |
| Jennafer Te Brake | Secretary | 25 Apr 2018 | 25 Feb 2019 | - | - |
| Kevin James Davies | Director | 4 May 1994 | 13 Jun 1997 | British | 65 years |
| Kevin Oconnor | Director | 1 May 1996 | 5 Nov 1998 | British | 66 years |
| Larissa Wilson | Secretary | 19 Feb 2016 | 2 May 2017 | - | - |
| Lorna Youssouf | Secretary | 2 May 2017 | 25 Apr 2018 | - | - |
| Mark Ian Irwin | Director | 1 Dec 2003 | 30 Nov 2016 | British | 69 years |
| Mark Raymond Andrews | Director | 26 Jun 2002 | 20 Sept 2011 | British | 73 years |
| Mark Vivian Pearce | Secretary | 19 Dec 2002 | 23 Jul 2004 | British | - |
| Michael Anthony Mcpolin | Director | 1 Jul 2009 | 16 Oct 2011 | British | 60 years |
| Michael Joseph Coyne | Director | 22 Feb 1993 | 29 Mar 1996 | British | 71 years |
| Nicholas Titmuss | Director | 30 Nov 2016 | 13 Jul 2020 | British | 55 years |
| Nigel Barker | Secretary | 22 Feb 1993 | 22 Jul 1993 | British | - |
| Nigel Wood | Director | 1 Feb 2005 | 21 Apr 2009 | British | 65 years |
| Pauline Louise Mcquillan | Secretary | 8 May 2006 | 5 Oct 2007 | British | - |
| Philip William Richardson | Director | 1 May 1998 | 26 Jun 2002 | British | 66 years |
| Rafael Moral Santiago | Director | 19 Feb 2016 | 13 Mar 2019 | Spanish | 53 years |
| Raimonde Maffeo | Director | 30 Nov 2016 | 8 Jun 2020 | British | 59 years |
| Richard Ian Crews | Director | 22 Feb 1993 | 31 Jan 1995 | British | 75 years |
| Robert Hugh Musgrove | Secretary | 6 Aug 1999 | 19 Dec 2002 | Other | - |
| Robert Hugh Musgrove | Secretary | 26 Oct 2006 | 5 Oct 2007 | Other | - |
| Robert James Hinton | Secretary | 8 Feb 2012 | 14 Nov 2014 | - | - |
| Sarah Caroline Gott | Secretary | 1 Oct 2008 | 9 Sept 2009 | British | - |
| Shaun Kevin Bryant | Secretary | 17 Jul 1995 | 6 Aug 1999 | British | - |
| Sheryl Muniz | Director | 1 May 1996 | 1 May 1998 | English | 61 years |
| Simon David Collier | Director | 22 Feb 1993 | 22 Jul 1993 | British | 75 years |
| Stephen Charles Crockford | Director | 31 Jan 1995 | 26 Jun 2002 | British | 75 years |
| Stephen Walter Gamble | Director | 26 Jun 2002 | 25 Jun 2003 | British | 76 years |
| Sudipto Banerjee | Secretary | 6 Mar 2019 | 9 Sept 2019 | - | - |
| Sulagna Goswami | Secretary | 12 Feb 2021 | 25 Feb 2022 | - | - |
| Sutheja Kj | Secretary | 9 Sept 2019 | 12 Feb 2021 | - | - |
| Victor Thomas Berry | Director | 22 Feb 1993 | 20 Apr 1994 | British | 83 years |
