| Alejandro Russo | Director | 2 Feb 2014 | 31 Jul 2018 | British | 55 years |
| Alexander Daniel Keeler Simpson | Director | 11 Dec 2017 | 27 Aug 2019 | British | 53 years |
| Alexander Simpson | Secretary | 1 Jun 2013 | 27 Aug 2019 | - | - |
| Andrew James Clarke | Director | 23 Jun 2011 | 25 Jul 2016 | British | 62 years |
| Christopher John Story | Director | 6 Feb 1998 | 24 Apr 2009 | British | 65 years |
| David Mark Jervis | Director | 11 Dec 2000 | 23 Jun 2011 | British | 60 years |
| Denise Nichola Jagger | Secretary | 1 Jan 2000 | 22 Dec 2003 | British | - |
| Drusilla Charlotte Jane Rowe | Nominee Director | 2 Jun 1997 | 26 Jun 1997 | British | 65 years |
| Eleanor Doohan | Secretary | 22 Dec 2003 | 1 Jun 2013 | British | - |
| Eleanor Doohan | Director | 2 Apr 2001 | 1 Jun 2013 | British | 56 years |
| Eleanor Jane Zuercher | Nominee Director | 2 Jun 1997 | 26 Jun 1997 | British | 63 years |
| Hayley Tatum | Director | 16 Dec 2024 | 11 Apr 2025 | British | 57 years |
| Jason Derek Marbeck | Director | 2 Apr 2001 | 23 Jun 2011 | British | 57 years |
| John Fallon | Director | 31 Jul 2021 | 18 Jul 2022 | British | 56 years |
| Jonathan Mark Fenn | Director | 26 Jun 1997 | 26 Jun 1997 | British | 65 years |
| Judith Jane Mckenna | Director | 2 Jun 2010 | 22 Mar 2013 | British | 60 years |
| Lucy Anne Calver | Director | 6 Feb 1998 | 6 Aug 1999 | British | 65 years |
| Mohsin Issa | Director | 6 Aug 2021 | 19 Dec 2024 | British | 55 years |
| Nicholas Ian Cooper | Secretary | 26 Jun 1997 | 31 Dec 1999 | British | - |
| Philip Dutton | Director | 26 Jun 1997 | 6 Aug 1999 | British | 65 years |
| Philip Titchmarsh | Secretary | 27 Aug 2019 | 6 Apr 2020 | - | - |
| Rajesh Sharma | Director | 26 Jun 1997 | 26 Jun 1997 | British | 58 years |
| Raymond Maurice Ainscoe | Director | 6 Feb 1998 | 11 Dec 2000 | British | 72 years |
| Richard Andrew Mayfield | Director | 16 Nov 2012 | 2 Feb 2014 | British | 57 years |
| Richard James Phillips | Director | 26 Jun 1997 | 23 Jun 2011 | British | 71 years |
| Robert Gerard Mcwilliam | Director | 3 Sept 2018 | 31 Jul 2021 | British | 57 years |
| Robert Pitcher | Director | 27 Jul 1999 | 11 Dec 2000 | British | 63 years |
| Roger Michael Burnley | Director | 7 Nov 2016 | 6 Aug 2021 | British | 60 years |
| Ronald Henry Joseph Graham | Director | 11 Dec 2000 | 23 Jun 2011 | British | 75 years |
| Sean John Clarke | Director | 11 Jul 2016 | 31 Dec 2017 | British | 58 years |
| Steven John Nuttall | Director | 18 Jul 2022 | 24 May 2023 | British | 50 years |
| Trusec Limited | Corporate Nominee Secretary | 2 Jun 1997 | 26 Jun 1997 | United Kingdom | - |