text: It's true! There's a blue sign there, you can just about see in this photo https://www.flickr.com/photos/harrywood/33032493813/ (That's a view southwards)
  
  So I have resolved this one hopefully.  I've just added a oneway:bicycle=no tag onto the one way section. That is hopefully the correct way to represent this (will be interesting to see if cyclestreets picks up that tag)