At least AQA have the decency to put their past papers on the internet. Half our teachers jobs come exam times was to smuggle papers away to photo-copy them.
It resulted in us working from copies of copies of copies with tea-stains and missing pages. AQA just had them all on the internet.
OCR biology was terrible. It almost forced you to just "list" key points (sometimes it was stupid what those points were). I remember in my exam I was running out of time so I just did everything in bullet points. There was also nothing to do with understanding - If you could regurgitate information you could get 100%. If you ever tried to show understanding of the processes - you would be wasting your time (and thus loosing out on marks).
Also, OCR politics was terrible. My gf sweated blood over an essay, went in with a predicted A (from teacher) came back a U. No reason, just U. After three re-marks it got bumped up a few marks (not sure whether it got into E or not).
She then did politics at Uni, happened to get the exact same question (wording almost identical) and handed it in. It got a 2:1. WTF?