Currently Education authorities are gathering info to get a picture of how schools have been affected, and encouraging schools to appeal. It is possible to work out from raw scores which students would have got a higher grade if January or last June's grade boundaries had been applied, so schools have a very good idea which students have been disadvantaged. However, they may concentrate on the 'D' grade students just because of numbers, so if your DC got a lower grade than expected, but not a 'D', it may be worth contacting the school to ask.
Knowsabitabouteducation that is just unnecessary showing off. Shame on you.