| Alan Robert Davidson | Director | 23 Jul 2014 | 31 Oct 2018 | British | 57 years |
| Alan Ronald Cook | Director | 31 Oct 2001 | 28 Jun 2002 | British | 72 years |
| Clare Jane Bousfield | Director | 22 Feb 2019 | 30 Sept 2023 | British | 57 years |
| Daniel Johns | Director | 30 Aug 2016 | 24 Jul 2017 | British | 50 years |
| David Adam Shaffer | Director | 15 Mar 2011 | 24 Jul 2014 | British | 60 years |
| David William King | Director | 3 Oct 2019 | 29 Sept 2023 | British | 63 years |
| Gregory Mark Wood | Director | 31 Oct 2001 | 29 Jul 2003 | British | 72 years |
| Hilary Anne Lowe | Secretary | 10 May 1999 | 3 Mar 2000 | British | - |
| James White Jack | Director | 29 Jul 2003 | 30 Jul 2004 | British | 74 years |
| Jeremy Spencer Deeks | Director | 15 Mar 2011 | 9 Nov 2016 | British | 55 years |
| John Kenneth Elbourne | Director | 27 Mar 1997 | 15 Jun 2001 | British | 81 years |
| Keith Leonard Bedell Pearce | Director | 15 May 1992 | 6 Apr 1997 | British | 79 years |
| Kelvin Nunn | Director | 7 Nov 2005 | 15 Mar 2011 | British | 68 years |
| Maria Luisa Cassoni | Director | 30 Dec 1996 | 6 May 1998 | British | 74 years |
| Matthew Walter Ford | Director | 23 Jul 2014 | 19 May 2016 | British | 57 years |
| Michael Alan Payne | Director | 1 Sept 2017 | 22 Feb 2019 | British | 54 years |
| Michael George Newmarch | Director | 15 May 1992 | 23 Jan 1995 | British | 87 years |
| Michael John Moores | Director | 31 Oct 2001 | 9 Sept 2002 | British | 69 years |
| Neil Anthony Berkett | Director | 1 Jul 2002 | 20 Jun 2003 | New Zealander | 70 years |
| Neil Graham Rowland Bradley | Director | 4 Oct 1999 | 12 Nov 2001 | British | 73 years |
| Nicolas John Hayter | Director | 30 Jul 2004 | 7 Nov 2005 | British | 60 years |
| Paul David Cooper | Director | 16 Jun 2020 | 6 May 2022 | British | 53 years |
| Peter Nicholas Hanby | Director | 15 Mar 1995 | 30 Dec 1996 | British | 76 years |
| Prudential Group Secretarial Services Limited | Corporate Secretary | 31 Oct 2001 | 4 Oct 2019 | United Kingdom | - |
| Richard Charles Everett | Director | 29 Jul 2003 | 19 May 2006 | British | 60 years |
| Robert Walker | Secretary | 15 May 1992 | 3 Feb 1998 | British | - |
| Roger Patrick Flynn | Director | 4 Oct 1999 | 20 Sept 2000 | British | 63 years |
| Stephen James Cook | Director | 30 Jul 1998 | 30 Jul 1999 | British | 74 years |
| Susan Doreen Windridge | Secretary | 3 Mar 2000 | 31 Oct 2001 | British | - |
| Timothy James William Tookey | Director | 2 Sept 2002 | 29 Jul 2003 | British | 63 years |
| Timothy Johan Winther | Director | 9 Aug 2006 | 3 Dec 2010 | British | 55 years |
| Tracey Lee Wellard | Secretary | 3 Feb 1998 | 10 May 1999 | British | - |