text: It is difficult to decide on the best tagging here. I think highway=living_street is a good compromise. Regarding Castle Place/Road etc., I'm fairly sure there used to be a sign indicating access only for motor vehicles. If that's definitely been removed, I don't object to those streets being living street as well. Part of Castle Gate has bollards blocking motor vehicle access, so that bit should probably remain as pedestrian. 
  
  The speed limit here is presumably still 30mph. If they are trying to make it more pedestrian friendly I'm surprised it's not been reduced to 20mph or lower.