I just wanted to add that I also referred to the OSM spec for Link roads and used that also in my decision. Per spec: "The _link tags are used to identify slip roads/ramps and "channelised" (most commonly physically separated) at-grade turning lanes connecting the through carriageways/through lanes of highways to other roadways of all types. _link tags should also be used for physical channelization of turning traffic lanes at traffic signal junctions and in roundabout designs that physically separate a specific turn from the main roundabout. "  As this way for Bowes Road was continuing to Bowes road straight ahead it is not a link road.