The last time I taught A Level English, two boys got A*s : one a lazy genius who spent two years regurgitating big long words he had learnt in year 8 (to be fair to him, he understood them) and could bullshit for England. The other was a bright lad, a reformed layabout, but he often spouted nonsense. It seems examiners are still blinded by bullshit! One sample answer used as an exemplar at GCSE that I have seen has a glaring plot mistake in it.
A very very diligent and intelligent girl also got an A*, on the bright side. It was at the lower grades where disparities between marking on papers was very noticeable. One girl got a high B on one paper, and failed the other. Didn't get a remark because she was many marks away from a grade boundary. And the exam boards tell us off if we are slightly outside tolerance in coursework!