I quite like this idea.

Although if tfl were open to losing a lane,
then we could narrow the road by 6 foot,
remove the island, and have our 1 phase crossing over 3 lanes widths, perhaps a few yard further up Devonshire Rd.

Currently the crossing outside the 'old launderette' starts half way round the bend, so you have to cross 3 lane widths to get to the island.

A 1 phase crossing would not stop the traffic any longer than present, with this narrower road. Michael - make it so.