| Alison Jane Malton | Director | 9 Jun 1997 | 3 Jul 2000 | British | 62 years |
| Alison Rennison | Director | 20 Jun 2000 | 25 Jan 2002 | British | 68 years |
| Amy Chapman | Director | 5 Oct 2011 | 18 Jan 2012 | British | 52 years |
| Barclays Group Limited | Corporate Nominee Director | 30 Apr 1991 | 9 Jun 1997 | - | - |
| Barclays Holdings Limited | Corporate Nominee Director | 30 Apr 1991 | 9 Jun 1997 | - | - |
| Barcosec Limited | Corporate Director | 20 Jun 2000 | 3 Jul 2003 | United Kingdom | - |
| Barometers Limited | Corporate Director | 20 Jun 2000 | 3 Jul 2003 | United Kingdom | - |
| Damien Keaney | Director | 26 Jan 2016 | 5 Dec 2022 | Irish | 50 years |
| Fiona Helen Elbourne | Director | 27 Nov 2009 | 5 Oct 2011 | British | 64 years |
| Garry John Welsh | Director | 3 Jul 2003 | 11 Mar 2005 | British | 62 years |
| Graham William Fraser Rogers | Director | 5 Oct 2011 | 23 Jul 2013 | British | 58 years |
| Heather Jill Maizels | Director | 3 Jul 2003 | 23 Jun 2009 | British | 71 years |
| Henderson Ian Arthur | Director | 13 Jun 2011 | 30 Nov 2012 | British | 65 years |
| Ian David Catherall | Director | 26 Jan 2016 | 9 Apr 2018 | British | 60 years |
| James Alexander Pitkin | Director | 1 Jun 2023 | 6 Nov 2024 | British | 40 years |
| John Michael David Atterbury | Secretary | 30 Apr 1991 | 3 Aug 1995 | British | - |
| Michael Richard Burtenshaw | Director | 9 Jun 1997 | 20 Dec 2000 | British | 82 years |
| Paul Howard Burd | Director | 5 Oct 2011 | 4 Feb 2016 | British | 64 years |
| Peter Emery | Director | 11 Dec 2012 | 15 Nov 2013 | British | 56 years |
| Rebecca Louise Jones | Director | 2 Nov 2017 | 20 Jul 2021 | British | 41 years |
| Richard James Amos | Director | 9 Jun 1997 | 6 May 2000 | British | 71 years |
| Rishi Shah | Director | 19 Jul 2021 | 22 Nov 2022 | British | 43 years |
| Robert Fellowes | Director | 3 Jul 2003 | 14 Jan 2010 | British | 84 years |
| Sally Curtin | Director | 9 Jun 1997 | 27 Sept 2002 | British | 63 years |
| Scott Stewart | Director | 23 Jul 2013 | 4 Feb 2016 | British | 52 years |
| Simon Walter Julian Wathen | Director | 3 Jul 2003 | 31 Dec 2004 | British | 75 years |
| Stephen Paul Merry | Secretary | 3 Aug 1995 | 7 Aug 1996 | British | - |