Don't you think you should contact Sutton Grammar PTA directly before doing this because it clearly says dates cannot be changed. The whole process was very well organised last year and us parents playing with their system could cause problems. I know that last year they checked children's details including medical issues and parent's contact emergency details on the door. It would be an awful experience for your child if they were turned away.
I don’t think we parents are playing here.... If my DD cant attend it, the place will go waste, instead some other eager child/parent could be benefited.... its not a expensive mock exam, so loosing £25 is not a big issue.......also they check the candidate number and the contact number and reconfirm at gate if we want any other contact number instead, they don’t go by any individual names or details.....they publish result on their website based on candidate numbers , and not email personally to parents.......they dont care if my DD or somebody else sitting for the exam, so long there is only one candidate against one candidate number.....for sure I’m not playing with their system. Thanks.