| Date | Name |
| 14/05/2015 | Mrs Grolimund Christine |
| 10/12/2016 | Mr Chen Bing |
| 05/01/2017 | Mrs Linda Stanwell |
| 21/05/2017 | Mr Charles Davies |
| 06/07/2017 | Mr Michael Cowan |
| 19/08/2017 | Mr Giovanni Palazzoli |
| 06/11/2017 | Mr Tertius Swart |
| 11/03/2018 | Mr Paul Glascoe |
| 31/05/2018 | Mr Christopher Roach |
| 31/07/2018 | Ms.Nicky Hayes |
| 04/09/2018 | Mr. Derek Eng Jin Li |
| 09/02/2019 | Mr. Paul Judge |
| 04/04/2019 | Mr. Andrew klein |
