| Ale Klaver | Director | 4 Apr 2013 | 19 Jan 2018 | Dutch | 57 years |
| Bartholomeus Johannes Hubertus Propper | Director | 15 Aug 2016 | 19 Jan 2018 | Dutch | 64 years |
| Borg Gerardus Van Katwijk | Director | 1 Sept 2015 | 1 Jul 2016 | Dutch | 53 years |
| David John Webb | Secretary | 22 Sept 2005 | 21 Jul 2009 | British | - |
| David John Webb | Secretary | 17 Dec 2009 | 28 Feb 2011 | - | - |
| Frank Stevenson | Director | 19 Mar 1991 | 1 Sept 2003 | British | 82 years |
| Frank Stevenson | Secretary | 19 Mar 1991 | 22 Sept 2005 | British | - |
| Hermanus Adrianus Maria Verhoeven | Director | 1 Jan 2008 | 26 Nov 2013 | Dutch | 60 years |
| Jacobus Bernard Laurentius Verhoeff | Director | 1 Sept 2014 | 1 Sept 2015 | Dutch | 57 years |
| Jan De Jong | Director | 1 Sept 2003 | 30 Jun 2008 | Dutch | 70 years |
| Jan Willem Ligterink | Director | 1 Jul 2008 | 4 Apr 2013 | Dutch | 63 years |
| Jan Willem Ligterink | Director | 26 Nov 2013 | 1 Sept 2014 | Dutch | 63 years |
| Marcel Remco Jochem Van Bergen | Director | 1 Sept 2014 | 19 Jan 2018 | Dutch | 55 years |
| Michael Smith | Director | 19 Mar 1991 | 1 Sept 2003 | British | 85 years |
| Onne Fetze Joustra | Secretary | 4 Apr 2013 | 1 Sept 2014 | British | - |
| Raymond Victor Richards | Secretary | 31 May 2017 | 1 Oct 2020 | - | - |
| Rene Van 't Hof | Director | 11 Jul 2017 | 19 Jan 2018 | Dutch | 58 years |
| Robert Rameau Slot | Director | 1 Sept 2003 | 1 Jan 2008 | Dutch | 79 years |
| Robert Van Drimmelen | Director | 15 Aug 2016 | 11 Jul 2017 | Netherlands | 59 years |
| Willem Bastiaan Vogelaar | Director | 19 Jan 2018 | 30 Nov 2022 | Dutch | 57 years |