Tiny nitpick[0]: a UK postcode corresponds to a minimum of 1, and maximum of 100 (not 20), delivery points[1] (not households). Typically about 15 delivery poin

Tiny nitpick[0]: a UK postcode corresponds to a minimum of 1, and maximum of 100 (not 20), delivery points[1] (not households). Typically about 15 delivery points. I fully agree with your main point, though, that the data are not meaningfully anonymised. [0] http://www.poweredbypaf.com/wp-content/uploads/2013/11/Programmers_guide_20131104.pdf http://www.poweredbypaf.com/wp-content/uploads/2013/11/Progr... (page 19, "Small User Postcode") [1] https://en.wikipedia.org/wiki/Delivery_point https://en.wikipedia.org/wiki/Delivery_point