..............going back to the post by @Ross about Peel's application in 2012 ,there are two pedestrian doorways in the dock wall by the Malmaison but whether they were pre-existing I can't say. The wall at this point is older and brick built. As the docks expanded Northwards I assume they started to use granite for the walls and turrets.
That bit on the imeediate left is where Peel wanted to knock through. Brings you out into Trafalgar dock (and would be perfect for an away fan gate.
It was a seperate application to the main one and i can't see news on the result anywhere.
The wall is from a different period and of a different material, but i dont think that matters in the grand scheme of things. It's all considered the same wall for planning purposes.
May consider asking the echo to follow up on that actually.
Incidentally many of the dock walls ,including B-M ,i.e . the dock retaining walls are also listed. The only thing that isn't listed around there is the water.