Typo in house number?
Presumably this should be number 57, like the name (which shouldn't be tagged)

Fire station

Unable to answer "What are the opening hours of Chinese Garage (Car Dealership)?" for way/44054743 via StreetComplete 29.1:

This is an off licence (Magestic Wines) on the South Eden Park Road side and a Tesco Express on the Stone Park Avenue side.

node/4556228891 was added by a MAPS.ME user. It's likely to be a shop=music rather than a shop=gift. Needs survey.

New sidings to be mapped here?

Not sure this is Rhododendron Avenue - should be Castle Hill Drive?

this seems to be "no vehicles" now but i couldn't see what the status is on The Shore

imperial jetty

Cycle parking - ?2 Sheffield stands

via StreetComplete 31.3

Lemontree Restaurant
(Indian)
http://www.lemontreesydenham.co.uk/contact-us/