Hi nicrnic
Welcome to the forum, Cheapside was is a district of Birmingham known today as Highgate. It used to run from Moseley Rd to Jamaica Row on the edge of the Bull Ring, but since the building of the wholesale fruit and veg market it curtails at Barford St.
This photo shows an OS map of what Cheapside would have looked like and the photo is of a back court off Cheapside around the time you mention.
Phil