For edexcel maths, i reckon that the boundries will be quite low as most people seemed to struggle with it. For biology 123, i think quite high (around 25 ish for C), for 456, i think average. But for b7, i think quite high because people seemed to think it was okay. For chemistry 123, i think it will be average, for 456, i think quite low. For c7, i think average/high as people didn't seem to struggle. For p123, i think VERY low as it is one of the worst p123 i, and my teachers and other students, have ever seen. For 456, i think low-average and for p7, i think quite average for a p7 paper, hope this helps!!