Some rivers clearly visibe in lowres bing (landsat) in this area. needs tracing

In the bing imagery this might look like just a courtyard/garden between buildings, but right here we see a shadow which I think means there's a garden on the roof of a building here. Survey needed to confirm that though

Bing imagery is a bit difficult to interpret here. Is it a multi-story car park with this little service road being a ramp? Leading upwards/downwards? Can't tell.
Survey needed to just to check what's going on there.

Took me a while to understand an edit being requested with this tweet https://twitter.com/JackMartinLe1th/status/1437403045655162889 , referencing this tweet https://twitter.com/Londoncanals/status/1437397033850183680 ...
They're saying the two tunnels which we currently show stopping here, should be extended a bit to go under Battersea Dogs & Cats Home and stop a bit further beyond at Prince of Wales Drive.
But I'll leave it because (A) I think I'd want to verify it somehow. Can anything be seen at ground level to verify? (B)
Sounds like they're not running trains down there (yet?) so correctness of the tunnels doesn't matter that much to me. I'll let a tunnel buff map it!

I was trying to find where "Maidenhead Mini Golf" is https://maidenheadminigolf.co.uk Judging by the the bing imagery I think it's here.
Also what else are we missing to the east here? Certainly looks like the carpark was enlarged since this was last mapped. Probably the building work we see in bing was finished now.