Delighted but also concerned...remarking?

Hi, my son has received his results this morning and has an unconditional offer at UWE (his first choice) to do Aerospace Engineering.
He achieved A C C C. Whilst we are both pleased, I have to admit to being relieved. His grandfather passed away very suddenly during the exam period on June 14th. It was a tremendous shock for the whole family as you can imagine. I neglected to inform his 6th Form College about the bereavement (in hindsight, I should have done). So my question is: should I ask for some of his results to be remarked in light of the stress and emotional upset he was under? He believes he could have done better. I would be grateful for any advice.
And well done to all students for today's results.