The cabinet looks close to the Royal British Legion club on Hilltop Rd.
Codelook doesn't know the road name that goes with a postcode. It makes a guess, based on what is the nearest road it can "see" on the map (or in some database, more likely) ... so sometimes gives strange results. It costs money to get hold of the proper post code database, which I guess they don't want to spend for this free service.
Crosstalk is interference from other telephone lines. In this case, it is caused by other subscribers with FTTC, where the signal on their line bleeds into your line where it appears as noise. Yes, it is a pain.