| Alan Christopher Bryant | Director | 15 Nov 1991 | 4 Nov 1992 | British | 102 years |
| Andrew Mackenzie | Director | 15 Nov 1991 | 31 Mar 2000 | British | 85 years |
| Brian Patrick Sullivan | Director | 15 Nov 1991 | 3 May 1996 | British | 89 years |
| Caterina De Feo | Secretary | 27 May 2005 | 12 Nov 2007 | British | - |
| Christopher Carney | Director | 9 Dec 2008 | 28 Jan 2011 | British | 51 years |
| Colin Richard Clapham | Secretary | 1 Jan 2009 | 1 Dec 2009 | Other | - |
| Colin Richard Clapham | Secretary | 16 Jan 2012 | 7 Nov 2018 | - | - |
| Graham Thomas Jacks | Secretary | 15 Nov 1991 | 9 Jun 1995 | British | - |
| James John Jordan | Secretary | 12 Nov 2007 | 15 Apr 2008 | British | - |
| Jennifer Canty | Secretary | 24 Apr 2024 | 30 Sept 2025 | - | - |
| Jonathan Philip Hastings | Secretary | 31 Jul 2001 | 27 May 2005 | British | - |
| Karen Lorraine Atterbury | Secretary | 1 Dec 2009 | 16 Jan 2012 | - | - |
| Katherine Elizabeth Hindmarsh | Secretary | 7 Nov 2018 | 27 Jun 2023 | - | - |
| Kathryn Elizabeth Mchugh | Secretary | 9 Jun 1995 | 31 Jul 2001 | British | - |
| Michael Christopher Chapman | Director | 15 Nov 1991 | 21 Feb 2000 | British | 75 years |
| Nicholas John Harris | Director | 15 Nov 1991 | 31 Mar 1995 | British | 73 years |
| Omolola Olutomilayo Adedoyin | Secretary | 27 Jun 2023 | 24 Apr 2024 | - | - |
| Paul David Phipps | Director | 15 May 2001 | 18 Jul 2001 | British | 73 years |
| Peter Anthony Carr | Secretary | 15 Apr 2008 | 1 Jan 2009 | British | - |
| Sarah Judith Thornley | Director | 1 Dec 2014 | 25 Oct 2019 | British | 40 years |
| Vikranth Chandran | Director | 28 Jan 2011 | 1 Dec 2014 | British | 48 years |
| William Nicholas Mason Jones | Director | 15 Nov 1991 | 31 Aug 1995 | British | 70 years |
| William Peter Long | Director | 31 Mar 2000 | 5 Mar 2001 | British | 79 years |
