The older signs in Bristol just say e.g. 8 instead of the full postcode district of BS8.
This sign, on the grotto that used to house the last remaining Hot Well pump, is the last Hotwell Road sign before it turns into the Portway. Which seems reasonable, as the Hotwell Road should obviously include the Hot Well...
GPS Coordinates:
51.45322, -2.62677
Location: Clifton