text: Good points! I did notice the misalighment even with the GPS trace from the Mapillary capture. I've done some work on alignment using Strava heatmap, Satellite images, and Mapillary.
  
  Could you perhaps check if it matches your observations?
  
  Cycle access: Yes - on the actual bridge there are clear signs, on bollards that indicate both pedestrian and cycle use.
  My own practical observation is that when I cycle it is always challenging to negotiate with pedestrians/dog walkers. Tree roots make the path quite uneven. The NCN 1 is routed along the A947 - riverview Drive. 
  
  I wonder how one could tag the riverside path to help other cycle routing applications know about the more challenging cycling conditions along the river path?