I am srry for not replying to ur query, dear. I had exams so i did not look into this thread. I have some really great notes for Edexcel A2 Bio unit 4 that cover each and every specification point. But i believe ur examz hav been ovr as v hav already gave Bio u4 on the 13th of june so surely u do not need them anymore. But still if u need them, jst let me know. Good luck for ur results and happy holidayz!!