HilaryN
Unable to answer "Does this pedestrian crossing have an island?" for https://osm.org/node/6034865791 via StreetComplete 32.1:

There is no pedestrian crossing here. Green Lane has islands in middle of road either side of Norbury Hill. No island or pedestrian crossing on Norbury Hill 
Photo is taken from opposite Norbury Hill.

Attached photo(s):
https://westnordost.de/p/46329.jpg