Click this link to go to a street view of this location and click the double-white arrows directly in front of "the TARDIS" (and to the left of the standard arrow). Or click here to go direct in with the new maps beta. Alternatively, you can also find it by searching "Police Telephone Box" in Google Maps' search box.
Please note:You cannot open it via normal street view. If you use the new maps beta, you can only access it via the search function.