dont u think 2014 is too recent?
oh so u solved gce 2014 ones also? oh
jan 2013 and may 2013 and may 2013 R makes 3 papers...
i suggest u doing 2011 jan specially, cuz i felt that this session, the examiners r keeping that paper in view, didnt u notice similarities with it and like the bio unit 3 paper??