GCSE Remarks Help!

Hi
I just got my GCSE results and was wondering if I should get a few remarks. Not too worried about the money but wanted to know if it is worth a shot.

Psychology - 1 UMS of an A
Physics - 9 UMS of an A (which I think is about 4/5 raw marks)
Chemistry - 5 UMS of an A (which is 3 marks)

I was wondering if there was a decent chance they would go up since I want to do them for A levels I wanted to know if it was worth the effort especially since unit 3 for chemistry was particularly low compared to my other units.

Thank you in advance...