Ive answere at least ten of these today.
Remarks cost money, so its whether the cost £ is worth the chance of outcome.
The rules concerning remarks have been tightened up. Much harder.
You cna get extra marks onlu if.
1. Theres some sort of basic clerical mistake i.e they added the marks incorrectly.
2. The examiner has made an actual error in the mark given for a question. I emphasise error as opposed to just a difference of opinion. This is much harder than it used to be. Considering its sciences, then you are looking at them failing to award marks they should have.
If its important and you cna afford it then go for it. the chance imo is small, but it happens and you would have peace of mind its been checked.