| Andrew David Oldale | Director | 16 Jun 2021 | 24 Feb 2025 | British | 57 years |
| Andrew John Gamble | Director | 29 Jan 2021 | 19 Jun 2024 | British | 59 years |
| Angela Louise Roshier | Director | 30 Dec 2013 | 4 Feb 2020 | British | 50 years |
| Barry Nethercott | Director | 6 Apr 2020 | 8 Jun 2021 | British | 71 years |
| Carillion Secretariat Limited | Corporate Secretary | 25 Mar 2004 | 18 Sept 2012 | United Kingdom | - |
| Charles William Grant Herriott | Director | 1 Sept 2016 | 21 Aug 2017 | British | 39 years |
| Christopher Thomas Solley | Director | 8 Oct 2012 | 1 Mar 2019 | British | 55 years |
| David Bolton | Director | 6 Feb 2017 | 25 Jan 2021 | British | 57 years |
| Dla Nominees Limited | Corporate Nominee Director | 18 Feb 2004 | 25 Mar 2004 | - | - |
| Dla Secretarial Services Limited | Corporate Nominee Director | 18 Feb 2004 | 25 Mar 2004 | - | - |
| Dla Secretarial Services Limited | Corporate Nominee Secretary | 18 Feb 2004 | 25 Mar 2004 | - | - |
| Duncan Elliot Dickson | Director | 18 Mar 2005 | 31 Jan 2008 | British | 71 years |
| Gerard Joseph Walsh | Director | 14 Nov 2008 | 22 May 2015 | British | 62 years |
| Graham Farley | Director | 12 Jul 2006 | 26 Nov 2012 | British | 76 years |
| Guy Christopher Millichamp | Director | 27 Jul 2016 | 13 Mar 2020 | British | 61 years |
| Helen Mary Murphy | Director | 21 Aug 2017 | 14 Sept 2018 | Irish | 44 years |
| Jack Leonard Fowler | Secretary | 1 Sept 2023 | 3 Sept 2024 | - | - |
| Julian Denzil Sutcliffe | Director | 4 Feb 2020 | 20 May 2024 | British | 57 years |
| Karen Marie Hill | Director | 18 Mar 2005 | 28 Jun 2006 | British | 48 years |
| Martin Timothy Smith | Director | 18 Mar 2005 | 19 Jan 2024 | British | 58 years |
| Martyn Andrew Trodd | Director | 9 Jun 2008 | 30 Dec 2013 | British | 58 years |
| Michael Andrew Donn | Director | 28 Jun 2006 | 8 Oct 2012 | British | 53 years |
| Moira Turnbull-fox | Director | 30 Dec 2013 | 1 Sept 2016 | British | 54 years |
| Mowlem Management Limited | Corporate Director | 25 Mar 2004 | 18 Mar 2005 | - | - |
| Neeti Mukundrai Anand | Director | 14 Sept 2018 | 4 Feb 2020 | British | 41 years |
| Nigel Anthony John Brindley | Director | 18 Mar 2005 | 1 Jul 2006 | British | 69 years |
| Paul Anthony Knowles | Director | 18 Mar 2005 | 26 Jul 2005 | British | 73 years |
| Peter James Dawson | Director | 25 Feb 2013 | 30 Dec 2013 | British | 55 years |
| Roy Neil Wallington | Director | 18 Mar 2005 | 16 Oct 2008 | British | 63 years |
| Stewart Chalmers Grant | Director | 8 Mar 2016 | 13 Sept 2016 | British | 74 years |
| Stewart Chalmers Grant | Director | 2 Jan 2019 | 31 Dec 2019 | British | 74 years |
| Stewart William Small | Director | 20 May 2024 | 27 Sept 2024 | British | 50 years |
| Tansy Jane Hepton | Director | 26 Jul 2005 | 27 Jul 2016 | British | 65 years |
| Vercity Management Services Limited | Corporate Secretary | 1 Sept 2016 | 31 Aug 2023 | United Kingdom | - |
| Victoria Marie Carroll | Director | 15 Jul 2015 | 31 Dec 2016 | British | 58 years |
