I was one mark off A* in Edexcel A-Level Maths and I requested copies of my marked script and had my college's Maths department review it. They found one mark in Paper 1 and three marks in Paper 3, but also one mark deducted in Paper 3. One of the teachers was an examiner this year as well. Is it worth requesting the review of marking for Paper 1 and 3? I already met my offer for my firm university choice so it's not a priority.
And also, where does it say that you get a full refund if your grade goes up? I can't find it anywhere on the exam boards' websites for some reason.