| Andrew John Swanson | Director | 19 Oct 1992 | 2 Mar 1993 | British | 76 years |
| Andrew John Swanson | Secretary | 13 Jun 1996 | 15 Aug 2000 | British | - |
| Andrew Martin Pollins | Director | 1 Jul 2020 | 12 Nov 2021 | British | 59 years |
| Andrew Stephen James Ramsay | Director | 4 Sept 2003 | 3 Feb 2011 | British | 65 years |
| Andrew Stephen James Ramsay | Secretary | 15 Aug 2000 | 3 Feb 2011 | British | - |
| David George Alcock | Director | 1 Oct 2018 | 31 Jan 2022 | British | 61 years |
| David Whipple Crane | Director | 15 Aug 2000 | 30 Nov 2003 | American | 67 years |
| Geert Herman August Peeters | Director | 15 May 2012 | 30 May 2013 | Belgian | 63 years |
| Graeme Robert York | Director | 9 Jul 2013 | 31 Jan 2015 | Australian | 65 years |
| Graham Austin Brown | Director | 15 Dec 1999 | 13 Oct 2000 | British | 70 years |
| Graham Hunter Hadley | Director | 2 Mar 1993 | 26 Jan 1996 | British | 82 years |
| Iain William Mcmorrine | Secretary | 19 Oct 1992 | 2 Mar 1993 | British | - |
| Jaideep Singh Sandhu | Director | 1 Feb 2015 | 30 Sept 2018 | Indian | 60 years |
| Kevin Adrian Dibble | Director | 23 Nov 2021 | 31 Mar 2024 | British | 58 years |
| Manouchehr Raznahan | Director | 29 Jun 1999 | 15 Dec 1999 | British | 81 years |
| Mark David Williamson | Director | 22 Jul 2004 | 15 May 2012 | British | 69 years |
| Maxwell Glyn Herbert | Director | 20 Sept 1996 | 1 Oct 1999 | British | 80 years |
| Maxwell Glyn Herbert | Secretary | 2 Mar 1993 | 13 Jun 1996 | British | - |
| Michael Raymond Smith | Director | 2 Mar 1993 | 14 Feb 1994 | British | 77 years |
| Penelope Louise Small | Director | 4 Sept 2003 | 31 Mar 2017 | British | 60 years |
| Peter Giller | Director | 24 Jul 2001 | 31 Dec 2003 | German | 84 years |
| Peter John Windsor | Director | 2 Mar 1993 | 13 Oct 2000 | British | 77 years |
| Philip Gotsall Cox | Director | 15 Aug 2000 | 6 Dec 2004 | British | 75 years |
| Philip John Spencer | Director | 2 Mar 1993 | 31 Oct 1996 | British | 86 years |
| Pierre Jean Bernard Guiollot | Director | 30 May 2013 | 31 Mar 2017 | French | 58 years |
| Robert John Wells | Director | 6 Apr 2022 | 12 Jul 2024 | British | 46 years |
| Roger Derek Simpson | Secretary | 3 Feb 2011 | 31 May 2017 | British | - |
| Sarah Frances Fleure Mingham | Director | 31 Mar 2017 | 10 May 2019 | British | 49 years |
| Sarah Jane Gregory | Director | 7 Jun 2019 | 31 Aug 2019 | British | 61 years |
| Sarah Jane Gregory | Secretary | 1 Jun 2017 | 23 Jul 2021 | - | - |
| Simon David Pinnell | Director | 31 Mar 2017 | 31 Jul 2020 | British | 62 years |
| Swift Incorporations Limited | Corporate Nominee Secretary | 19 Oct 1992 | 19 Oct 1992 | United Kingdom | - |