In this case, we have open street-level imagery, which confirms the name (as of April 2019) is "Humbolt Close". See https://www.mapillary.com/app/?z=17&lat=51.243787734252&lng=-0.60386583700787&pKey=202880394844293&focus=photo&x=0.24727239115994637&y=0.47591149327806864&zoom=1.3174613990969597 . So I think we have to leave the name as it is unless there's new evidence to suggest the name has changed.