I don’t think they will be cancelled now, as schools are not going to be closed so exams will go ahead.
Also, during lockdown, schools were open for the children of keyworkers so even if they were to close for the majority, I think they will remain open for Autumn exams and children of keyworkers. There are so few sitting that social distancing is very viable.
My nephew has sat 2 papers for Economics already and there were only two candidates at his centre.
When is your first exam?