| Aaron Raymond Henricksen | Director | 18 Apr 2016 | 15 Sept 2016 | British | 62 years |
| Adam Victor Chambers | Director | 7 Jul 2014 | 30 Apr 2016 | British | 63 years |
| Alan Lewis Robson | Director | 19 Jan 1993 | 1 Jul 1994 | British | 91 years |
| Alan Lewis Robson | Secretary | 19 Jan 1993 | 1 Jul 1994 | British | - |
| Barbara Elizabeth Bradley | Director | 30 May 2014 | 29 Jan 2015 | British | 51 years |
| Darryn Stanley Gibson | Director | 18 May 2009 | 29 Jun 2012 | New Zealander | 61 years |
| David Charles Eveleigh | Secretary | 25 Jun 2022 | 15 Sept 2023 | - | - |
| David Ernest Perkins | Director | 19 Feb 1993 | 1 Jul 1994 | British | 79 years |
| David Leigh Merritt | Director | 19 Jul 2000 | 27 Sept 2000 | British | 53 years |
| David Leigh Merritt | Secretary | 19 Jul 2000 | 27 Sept 2000 | British | - |
| David Lynn Samuel | Director | 8 Feb 1992 | 30 Apr 1992 | British | 88 years |
| Francesca Anne Todd | Secretary | 27 Sept 2000 | 31 May 2006 | British | - |
| Gareth Brian Moss | Director | 27 Sept 2016 | 30 Sept 2018 | British | 60 years |
| Gavin Hill | Director | 21 Jul 2006 | 23 Apr 2010 | British | 58 years |
| Gerald Joseph Cummins | Director | 1 Jan 1995 | 28 Apr 1997 | British | 83 years |
| Gerrard Rodgers | Director | 1 Dec 1995 | 3 Mar 2000 | British | 78 years |
| Gordon Bryden | Director | 19 Feb 1993 | 1 Dec 1995 | British | 69 years |
| Graham Baldock | Director | 30 May 1996 | 19 Jul 2000 | British | 68 years |
| Hugh John Elliott Fitzsimmons | Director | 23 Apr 2010 | 6 Sept 2011 | British | 56 years |
| Jeremy Michael Benson | Director | 6 Sept 2011 | 8 Apr 2013 | British | 63 years |
| John Lee Simpson | Director | 19 Feb 1993 | 30 Mar 1999 | British | 86 years |
| Jonathan Mark Prew | Director | 8 Apr 2013 | 30 May 2014 | British | 62 years |
| Julia Naomi Cavanagh | Director | 27 Sept 2000 | 3 May 2007 | British | 60 years |
| Julian Bernard Wilson | Director | 19 Jan 1993 | 19 Feb 1993 | British | 77 years |
| Julian Bernard Wilson | Secretary | 8 Feb 1992 | 19 Jan 1993 | British | - |
| Keith John Newland Hillas | Director | 18 Apr 2016 | 2 Jun 2020 | British | 60 years |
| Michael Lawrence O'hagan | Director | 30 Apr 1992 | 19 Jan 1993 | British | 91 years |
| Robert George Wilmot Stansfield | Director | 3 May 2007 | 17 Jul 2008 | British | 59 years |
| Ruby Mcgregor-smith | Secretary | 1 Jul 1994 | 1 Dec 1995 | British | - |
| Sean Hanson | Director | 29 Jan 2015 | 30 Apr 2016 | Irish | 62 years |
| Serco Corporate Services Limited | Corporate Secretary | 31 May 2006 | 8 Oct 2021 | United Kingdom | - |
| Stephen Ronald Hill | Director | 11 Oct 2001 | 21 Jul 2006 | British | 58 years |
| Stuart John Haydon | Secretary | 8 Oct 2021 | 25 Jun 2022 | - | - |
| Thomas Clement | Director | 1 Dec 1995 | 19 Jul 2000 | British | 79 years |
| Thomas Clement | Secretary | 1 Dec 1995 | 19 Jul 2000 | British | - |
| Timothy Charles Lawlor | Director | 21 Jul 2006 | 18 May 2009 | British | 56 years |
| Wayne Harold Felton | Director | 19 Feb 1993 | 1 Jul 1994 | British | 65 years |