In England, according to the Telegraph today the situation is clearly going to be far worse than in Scotland:

Further, they report:

https://www.telegraph.co.uk/news/2020/06/30/students-can-appeal-gcse-a-levels-believe-victims-discrimination/

In Scotland as early as April, staff and pupils knew:

After 4 August, a free appeals service will be available to schools and colleges, to allow them to request a review of the grade awarded for a learner or a group of learners. It is important that such a service is in place in this exceptional year.

https://www.sqa.org.uk/sqa/93920.html