| Alexandra Mary Moffatt | Director | 14 Nov 2018 | 31 Dec 2020 | British | 46 years |
| Andrew John Bowman | Director | 23 Oct 2014 | 10 Feb 2017 | British | 54 years |
| Andrew John Bowman | Director | 5 Mar 2018 | 3 Jul 2018 | British | 54 years |
| Ann Hird | Director | 9 Dec 2010 | 15 Nov 2012 | British | 69 years |
| Anne Elizabeth Jones | Director | 1 Nov 2000 | 19 Sept 2007 | British | 66 years |
| Anthony Nicholas Greatorex | Director | 18 Mar 2014 | 17 Apr 2015 | British | 58 years |
| Capita Company Secretarial Services Limited | Corporate Secretary | 19 Sept 2007 | 1 Dec 2008 | - | - |
| Chandrasekhar Ramamurthy | Director | 19 Jun 2019 | 31 Mar 2022 | British | 70 years |
| Chantal Free | Director | 23 Feb 2020 | 30 Jun 2021 | British | 58 years |
| Christopher Douglas Smith | Director | 1 Nov 2006 | 19 Sept 2007 | British | 70 years |
| Denise Blanks | Director | 1 Nov 2000 | 30 Jun 2006 | British | 65 years |
| Erika Bannerman | Director | 9 May 2019 | 7 Aug 2019 | British | 55 years |
| Gareth Pickles | Director | 24 Oct 2018 | 31 Jul 2019 | British | 59 years |
| Ian Edward Jarvis | Director | 3 Jan 2014 | 23 Mar 2016 | British | 55 years |
| Ian Nicholas Allenby | Director | 17 Jan 1992 | 19 Sept 2007 | British | 72 years |
| James D'arcy Vincent | Director | 10 Mar 2015 | 16 May 2017 | British | 60 years |
| John William Hough | Director | 17 Jan 1992 | 19 Sept 2007 | British | 73 years |
| Malcolm Ewart Pearce | Director | 1 Nov 2001 | 19 Sept 2007 | British | 58 years |
| Michael Addenbrooke | Director | 19 Sept 2007 | 9 Jul 2012 | British | 71 years |
| Michael Jon Fahy | Secretary | 17 Jan 1992 | 19 Sept 2007 | British | - |
| Niall John Mccallum | Director | 10 May 2017 | 15 Sept 2017 | British | 52 years |
| Nicholas Edward Latner | Director | 1 Apr 2017 | 31 Oct 2018 | British | 48 years |
| Nicholas Mackenzie Herbert Burns | Director | 31 Jul 2012 | 26 Jun 2015 | British | 59 years |
| Nicolas Norman Bedford | Director | 13 Nov 2009 | 22 Sept 2010 | British | 67 years |
| Nicolas Norman Bedford | Director | 9 Feb 2017 | 1 Feb 2018 | British | 67 years |
| Nigel Jeffrey Purveur | Director | 14 Jan 2020 | 2 Jan 2021 | British | 72 years |
| Nigel Paul Hacking | Director | 17 Jan 1992 | 31 Oct 2000 | British | 70 years |
| Peter Marcus Telford | Director | 9 Oct 2018 | 27 Sept 2019 | British | 69 years |
| Philip Charles Braithwaite | Director | 18 Dec 2008 | 1 Dec 2011 | British | 75 years |
| Richard John Shearer | Director | 21 Oct 2015 | 15 Dec 2016 | British | 62 years |
| Simon Edward Hall | Director | 10 Jun 2016 | 10 Feb 2017 | British | 51 years |
| Simon James Sherwood Mayall | Director | 11 Dec 2017 | 14 Aug 2020 | British | 59 years |
| Simon John Davies | Director | 19 Sept 2007 | 19 Oct 2009 | British | 58 years |
| Simon Newton | Director | 14 Jun 2021 | 31 Dec 2021 | British | 63 years |
| Stephen David Parkinson | Director | 19 Sept 2007 | 18 Dec 2008 | British | 63 years |
| Stephen Sharp | Director | 11 Jan 2012 | 3 Feb 2014 | British | 61 years |
| Susan Lesley Ring | Director | 17 Jan 2014 | 20 Jul 2018 | British | 65 years |
| Timothy Tracy Brooke | Director | 21 Oct 2015 | 31 Aug 2018 | British | 66 years |