| Alan Jack Underwood | Director | 22 Nov 1991 | 1 Jan 1992 | British | 89 years |
| Alan Lewis Robson | Director | 30 Apr 1992 | 12 Mar 1994 | British | 91 years |
| Alan Lewis Robson | Secretary | 1 Jun 1992 | 12 Mar 1994 | British | - |
| Andrew Stephen Robertson | Director | 1 Jul 2020 | 12 Sept 2022 | British | 60 years |
| Andrew Warren Newton White | Director | 9 Dec 2003 | 3 Oct 2011 | British | 60 years |
| Anthony Bruce Cornwell | Director | 1 Jun 1992 | 18 Aug 1993 | British | 83 years |
| Christopher James Farnfield | Director | 1 Sept 1993 | 21 Mar 1994 | British | 82 years |
| Christopher James Farnfield | Director | 1 Jan 1995 | 31 Dec 1995 | British | 82 years |
| Christopher Rajendran Hyman | Director | 23 Dec 1998 | 27 Jul 2000 | British | 63 years |
| David Burke | Director | 24 May 2012 | 2 Mar 2015 | Irish | 61 years |
| David Charles Eveleigh | Secretary | 25 Jun 2022 | 15 Sept 2023 | - | - |
| David Ernest Perkins | Director | 30 Apr 1992 | 12 Mar 1994 | British | 79 years |
| David John Greer | Director | 18 Mar 2015 | 16 Oct 2018 | British | 69 years |
| David Lynn Samuel | Director | 22 Nov 1991 | 30 Apr 1992 | British | 88 years |
| Edward Harold Montgomery | Director | 1 May 1994 | 30 Jan 1997 | Canadian | 79 years |
| Edward Harold Montgomery | Director | 29 Jul 1997 | 22 Mar 2000 | Canadian | 79 years |
| Everton Bryan | Director | 6 Nov 1995 | 1 Apr 1999 | British | 67 years |
| Francesca Anne Todd | Secretary | 11 Jul 2000 | 31 May 2006 | British | - |
| Gavin Hill | Director | 21 Jul 2006 | 23 Apr 2010 | British | 58 years |
| George Gowans Gray | Director | 30 Apr 1992 | 12 Mar 1994 | British | 88 years |
| Gerrard Rodgers | Director | 24 Jul 1995 | 30 Jan 1997 | British | 78 years |
| Gerrard Rodgers | Director | 24 Jul 1995 | 30 Jan 1997 | British | 78 years |
| Grant Rumbles | Director | 29 Oct 2001 | 25 Mar 2008 | British | 68 years |
| Guy William Leach | Director | 7 Jun 2000 | 15 May 2012 | British | 63 years |
| John Charles Duggan | Director | 30 Apr 1992 | 9 Jan 1997 | British | 72 years |
| John Lee Simpson | Director | 1 Jun 1992 | 31 Dec 1992 | British | 86 years |
| John Patrick Hickey | Director | 20 Nov 2008 | 15 May 2012 | British | 59 years |
| John Richard Poston | Director | 22 Nov 1991 | 1 Jan 1992 | British | 87 years |
| John Roger Bolster | Secretary | 12 Mar 1994 | 1 Sept 1994 | British | - |
| John Stephen Allkins | Director | 22 Nov 1991 | 30 Apr 1992 | British | 77 years |
| John Warburton Unsworth | Secretary | 22 Mar 2000 | 11 Jul 2000 | British | - |
| Josephine Dixon | Director | 27 Jul 2000 | 10 Oct 2002 | British | 67 years |
| Julia Naomi Cavanagh | Director | 27 Jul 2000 | 16 Oct 2008 | British | 60 years |
| Julian Bernard Wilson | Director | 1 Jun 1992 | 5 Mar 1993 | British | 77 years |
| Julian Bernard Wilson | Secretary | 22 Nov 1991 | 1 Jun 1992 | British | - |
| Kelvin Matthew Dryden | Director | 13 Nov 2022 | 17 Jul 2023 | British | 56 years |
| Kevin Stanley Beeston | Director | 30 Apr 1992 | 30 Jan 1997 | British | 64 years |
| Kevin Stanley Beeston | Director | 29 Jan 1998 | 24 Mar 2000 | British | 64 years |
| Michael Lawrence O'hagan | Director | 30 Apr 1992 | 4 Nov 1992 | British | 91 years |
| Nickesha Graham-burrell | Secretary | 15 Sept 2023 | 1 Oct 2025 | - | - |
| Oswald Edward Oliver | Director | 21 Mar 1994 | 20 Feb 1998 | British | 89 years |
| Paul Jonathan Manning | Director | 25 Jun 1994 | 14 Jan 1999 | British | 63 years |
| Paul Jonathan Manning | Secretary | 13 Nov 1996 | 14 Jan 1999 | British | - |
| Paul Kehoe | Director | 9 Dec 1993 | 31 Jul 1997 | British | 67 years |
| Paul Seth Mckoen | Director | 9 Dec 1993 | 25 Jun 1994 | British | 65 years |
| Peter Boverton Redwood | Director | 1 Jun 1992 | 31 Dec 1995 | British | 89 years |
| Peter James Mohring | Director | 2 Mar 2015 | 21 Apr 2021 | New Zealander | 67 years |
| Riad Chehayeb | Director | 11 Jun 2021 | 1 Jan 2025 | Canadian | 60 years |
| Robert Clayton Mcguiness | Director | 28 Oct 2011 | 2 Mar 2015 | British | 75 years |
| Robert David Buckley | Director | 21 Mar 1994 | 27 Jul 2000 | British | 79 years |
| Roger Phillip Hogbin | Secretary | 1 Sept 1994 | 13 Nov 1996 | British | - |
| Ronen Ilan | Secretary | 14 Jan 1999 | 22 Mar 2000 | British | - |
| Ruby Mcgregor-smith | Director | 6 Nov 1995 | 30 Apr 2000 | British | 63 years |
| Scott Michael Ashby | Director | 2 Mar 2015 | 31 Dec 2019 | British | 64 years |
| Serco Corporate Services Limited | Corporate Director | 10 Jul 2014 | 1 Jul 2020 | United Kingdom | - |
| Serco Corporate Services Limited | Corporate Secretary | 31 May 2006 | 8 Oct 2021 | United Kingdom | - |
| Stephen Bartley | Director | 8 Nov 2010 | 10 Jul 2014 | British | 56 years |
| Stephen Ronald Hill | Director | 10 Oct 2002 | 21 Jul 2006 | British | 58 years |
| Stuart John Haydon | Secretary | 8 Oct 2021 | 25 Jun 2022 | - | - |
| Suzanne Claire Baxter | Secretary | 21 Jul 2000 | 11 Jan 2001 | British | - |
| Timothy Charles Lawlor | Director | 21 Jul 2006 | 6 Oct 2010 | British | 56 years |
| William Frank Futcher | Director | 1 Jun 1992 | 31 Dec 1992 | British | 79 years |