I was just following the flood avoidance route which diverged from the main route as I found a couple of times. I don’t think there was any material difference in distance between the choices, though some may have run faster than others. All good, and total distance 109.40km returning via Maldon from Danbury, which was fine. Plus I didn’t hit the Papermill flood, confirmed to be present by other riders.
The rain did ease then stop by 1pm, there were indeed blue skies and some sun later on. Nice to finish in the dry and I didn’t need to change into my spare layers in the dry bag (in my seat bag).
If you do get cold and wet, even when moving, that can be miserable. I think you made the right choice for you, if you couldn’t keep warm, and were shivering.