Could you clarify the type of barrier?

Eastney Pier

The Royal Maritime Club is in Queen Street . This icon in the middle of the Naval Base seems to be an error unless there are two Royal Maritime Clubs in Portsmouth with only one open to the public

Stoke Park School Pedestrian Entrance

missing buildings

via StreetComplete 37.2

Cycleway under construction https://twitter.com/adamtranter/status/1334082759690776576

An entry leading to allotments.

Coundon Court pedestrian entrance

there are many horse chestnut trees along this drive where we used to 'conkering' many moons ago

Unable to answer "Is there a shelter at the bus stop Westminster Rd / Grosvenor Rd?" for node/4815875303 via StreetComplete 34.2:

No bus stop