I know that students don't have to choose to take Computer Science GCSE. But is it right that they DO have to had some level of computing education (even if they don't choose CS as one of their options)? In the same way as even if you don't choose PE GCSE, you still have to do some PE!
From googling, it looks to me like you do have to.
But my son's school seems to be saying, you either do CS for GCSE ... or you never study it again!