Oops I was actually diagnosed 5 weeks ago and with my surgery next week it's taken 6 weeks to get there. I was scared that the process was so slow but was advised that government target for the NHS to fully diagnose / identify the position and confirm what they are going to do about it is 31 days and then they have another 31 days to act on it = 62 days = <9 weeks. This is based on research undertaken by cancer research as it is considered unlikely that the cancer will grow significantly in that time.
Hope this helps anyone else who is fretting at how long it seems to be taking to get things done.