"Looks to be a road sign at this location"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2023-12-13T18:30:01Z
POI name: In memory of Anne Frank
POI types: historic-memorial-plaque
#organicmaps android

What is the oneway'ness of Old Barrow Hill joining onto Lower High Street?

This Church is now known as Hope Café and Church. See: http://www.hopecafeandchurch.org.uk

Is number 3 Jada or is number 2 Jada?

Check that this is Richeson Close

Check extent and number of new cottages here

Kings Weston Transmission Site

Unable to answer "Where is this fire hydrant located?" for node/9666882029 via StreetComplete 53.3:

This is all I could see here. Is this a hydrant? I could see no sign nearby.

Attached photo(s):
https://westnordost.de/p/171148.jpg

Beaufort House Apartments - Your Stay Bristol Ltd

school now open as "North Star 265°" ?

https://get-information-schools.service.gov.uk/Establishments/Establishment/Details/149843