I've seen a few threads with posters talking about getting remarks where grades were close to boundaries. There have been rule changes this year which mean:
- marks will only change if there has been an error in marking (in totalling marks or applying the mark scheme)
- marks will not be changed just because a second marker would have interpreted the answer or mark scheme differently.
The Guardian sums this change up quite succinctly.
Ofqual have also set out their reasoning for this change with the argument being that it creates a fairer system so as not to disadvantage schools or students who cannot afford to pay for remarks.
OCR also set out what this means for parents/students or schools seeking a review (not remark) of papers. Edexcel also provide a handy summary for students.
Please do speak to your school/son or daughter's school before going for a review of the exam paper, as with the changes it would seem that grade changes are more unlikely.