The Universities know this and are working with students that missed the required grades to understand what their projected grades, mock results etc were and make a case by case evaluation. It's nowhere near as dire a situation as is being made out.

I watched the news broadcasts when the results were announced. There were TV journalists at schools in deprived areas interviewing students before the grades were released, with the journalists giving dour warnings about the impending problems they expected. When the results were announced the students were leaping about with joy, hugging and celebrating, it was like a world cup win. The journalists didn't seem to know what to say. back in the studio the best the presenter could do was mutter that "I'm sure we'll find some students that were disappointed later".

I'm sure they did.