| Alan Humphreys Smith | Director | 7 Dec 2004 | 5 Mar 2018 | British | 83 years |
| Alan Schofield | Director | 8 Dec 2020 | 7 Mar 2022 | British | 80 years |
| Allan Heron | Director | 23 Nov 2010 | 31 Mar 2024 | British | 64 years |
| Andrew Kenneth Robert Lambert | Director | 12 Dec 2001 | 6 Dec 2004 | British | 61 years |
| Andrew Kenneth Robert Lambert | Director | 30 Sept 2006 | 26 Mar 2007 | British | 61 years |
| Andrew Kenneth Robert Lambert | Director | 6 Mar 2012 | 10 Mar 2020 | British | 61 years |
| Andrew Taujanskas | Director | 19 Jan 1998 | 13 Dec 1998 | British | 69 years |
| Anthony Stevenson | Director | 19 Jan 1998 | 13 Dec 1998 | British | 75 years |
| Barbara Ann Dutton | Director | 10 Mar 2020 | 10 Mar 2024 | British | 68 years |
| Brendan Joseph Fahey | Director | 27 Mar 2007 | 23 Mar 2009 | British | 59 years |
| Charles James Caine | Director | 2 Dec 2008 | 25 Nov 2009 | British | 55 years |
| Christopher Brown | Director | 4 Mar 2008 | 29 Feb 2016 | British | 67 years |
| Christopher Lee | Director | 14 Dec 1998 | 30 Sept 2006 | British | 76 years |
| Christopher Lee | Director | 4 Mar 2008 | 10 Mar 2020 | British | 76 years |
| Colin Philip Maloney | Director | 18 May 2009 | 30 Jun 2023 | British | 68 years |
| Elaine Billington | Director | 12 Sept 2017 | 5 Mar 2018 | British | 60 years |
| Frances Lynne Brierley | Director | 6 Mar 2018 | 31 Aug 2020 | British | 75 years |
| George Burkhill | Director | 7 Dec 2004 | 3 Mar 2008 | British | 74 years |
| Hammond Suddards Secretaries Limited | Corporate Secretary | 18 Dec 1997 | 19 Jan 1998 | - | - |
| Hse Directors Limited | Corporate Director | 18 Dec 1997 | 19 Jan 1998 | - | - |
| Janice Smethurst | Director | 3 Dec 2013 | 1 Jun 2015 | British | 63 years |
| Jeremy Robert John Deering | Director | 19 Jan 1998 | 8 Aug 2002 | British | 66 years |
| John Jones | Director | 2 Mar 2010 | 7 Mar 2022 | British | 67 years |
| Kevin Dewhurst | Director | 6 Dec 2007 | 7 May 2009 | British | 59 years |
| Kevin William Price | Director | 19 Jan 1998 | 11 Dec 2001 | British | 78 years |
| Linda Margaret Booth | Director | 1 Apr 2005 | 12 Mar 2007 | British | 74 years |
| Malcolm Fordyce Howarth | Director | 13 Oct 2008 | 30 Sept 2013 | British | 71 years |
| Michael Gerald Mccallion | Director | 5 Sept 2006 | 5 Dec 2007 | Irish | 58 years |
| Michael Hugh Porter | Director | 12 Dec 2001 | 12 Apr 2004 | British | 69 years |
| Michael John Edwards | Director | 13 Mar 2007 | 23 Nov 2010 | British | 71 years |
| Neville Kidd | Director | 12 Dec 2001 | 6 Dec 2004 | British | 67 years |
| Nicholas Robert Parr | Director | 27 Mar 2007 | 22 Aug 2008 | British | 54 years |
| Paul Andrew West | Director | 14 Dec 1998 | 23 Aug 2001 | British | 72 years |
| Paula Marie Steer | Director | 7 Dec 2004 | 3 Mar 2008 | British | 56 years |
| Paula Marie Steer | Director | 6 Mar 2018 | 31 Jul 2023 | British | 56 years |
| Peter Norman Applewhite | Director | 19 Jan 1998 | 30 Sept 2001 | British | 81 years |
| Peter Norman Applewhite | Secretary | 19 Jan 1998 | 30 Sept 2001 | British | - |
| Priscilla Jane Newell | Director | 19 Jan 1998 | 31 Mar 2005 | British & New Zealad | 82 years |
| Robert David Armstrong | Director | 19 Jan 1998 | 6 Jul 2017 | British | 77 years |
| Sally Joanne Cabrini | Director | 6 Dec 2007 | 3 Oct 2008 | British | 62 years |
| Sharon Jane Willis | Director | 7 Dec 2004 | 5 Dec 2007 | British | 58 years |
| Steven Beaumont | Director | 13 Aug 2002 | 5 Sept 2006 | British | 63 years |
| The Law Debenture Pension Trust Corporation P.l.c. | Corporate Director | 11 Mar 1998 | 6 Mar 2012 | United Kingdom | - |
| Timothy Lloyd Birkett | Director | 13 Apr 2004 | 26 Mar 2007 | British | 65 years |