I'm basically sympathetic to Sinz, because a lot of post titles, especially reviews, are either
a) repetitious (e.g. when they include 'London' or 'West Midlands', when those are section headings and hence already known to the reader) or
b) lack simple keywords that would make comprehension and categorization much easier, especially where the review itself is badly written (e.g. B&S, No show)
However, this needs to be done carefully and with discrimination. For one thing, where the location in London is the first half of a postcode, it's probably not worth adding the name of a district, because many London districts cross postcode boundaries. For example, certainly most of Canning Town is in E16, and if part of it is in E14, that fact will probably not aid the reader, because really only a local would know where the boundary lies. In any case, not many London districts have official boundaries.