| Arnaud Jean-charles Régis Philippe Van Troeyen | Director | 6 Feb 2012 | 12 Feb 2014 | French | 57 years |
| Bernard Denis Maurice Tabary | Director | 12 Feb 2014 | 19 Mar 2023 | French | 66 years |
| Charles Anthony Hodgson | Director | 6 Dec 2015 | 14 Mar 2016 | British | 47 years |
| David Allen Brown | Director | 6 Feb 2012 | 5 Nov 2021 | British | 66 years |
| David Lowrie | Director | 12 Feb 2014 | 4 Aug 2017 | British | 60 years |
| Keith Down | Director | 6 Feb 2012 | 6 Dec 2015 | British | 61 years |
| Malcolm Robert Rimmer | Director | 12 Aug 2010 | 12 Feb 2014 | British | 67 years |
| Michael Stewart Hodgkinson | Director | 12 Feb 2014 | 31 May 2019 | British | 82 years |
| Simon Patrick Butcher | Director | 14 Mar 2016 | 30 Nov 2018 | British | 59 years |
| Stephane Andre Richon | Director | 24 Feb 2010 | 21 May 2010 | French | 74 years |