Shadow education minister Emma Hardy tells HuffPost UK ministers need to think about recruiting more assessors now if it wants to push back exams.
More than half of flagged applications were from black candidates.
The current rules have prevented talented and qualified people from studying, campaigners say.
EU applicants are re-thinking studying in the UK.
Uncertainty over grants for overseas students is leading them to look elsewhere.
Those who use Clearing are 'ashamed', survey finds.