This is what they say on their home page.
Spatial's Social Responsibility
In Spatial we believe that students are the country's future; therefore, we actively seek to involve them in our events. We dedicate free-of-charge at least 15 seats to students at our events. We also make available a corner for students to display their projects.
This is a tremendous idea and I'd like to suggest to other conference organisers that they consider a similar offer to students.
Its an idea that I am picking up on and in future I will offer at least two free-of-charge places to students who would like to attend my workshops.