Unable to answer "Does this crossing have markings across the roadway?" – Crossing – node/8462587460 via StreetComplete 61.3:

No crossing here it's a footpath, maybe lines should be tidied up?

Desire path from common path to road

via StreetComplete 61.2

Attached photo(s):
https://streetcomplete.app/p/297818.jpg

GPS Trace: @UrbanPretzle/traces/12037830

Trace of footpath by South Norwood Leisure Centre including desire paths

via StreetComplete 61.3

GPS Trace: @UrbanPretzle/traces/12082441

Unable to answer "Is this still here?" – Haz (Restaurant) – node/9839384017 via StreetComplete 60.3:

Never existed at this spot

Unable to answer "What’s the name of this street?" – Residential Road – way/1428088530 via StreetComplete 61.3:

Access way

Unable to answer "Which customers visit this hairdresser?" – house number 157: Hairdresser – way/410303597 via StreetComplete 61.1:

This is not a shop but a residential unit

Attached photo(s):
https://streetcomplete.app/p/288543.jpg

Unable to answer "How many car lanes does this road have?" – Streatham High Road [A23] (Trunk Road) – way/831784107 via StreetComplete 60.3:

2 lanes for this segment, one for cars and one for bus route

Lots of shops and service buildings missing, such as students union legal advice.