One of a series of 4 photos (titles Letchworth Prefabs 1, 2, 3, 4) showing some of the sixty-odd prefabricated houses build 1950-51 in the Wilbury Hills area of Letchworth Garden City. I believe these are acceptable on grounds of privacy as they contain no particular identifying information (beyond what e.g. Google StreetView would show - no house numbers, number plates, people, etc.