Here is my VERY complicated, “load of bullocks” method: Press <Ctrl+U>, <Ctrl+F>, type “top”, Press <Enter>
For me it is faster than the maps method considering the scrolling time, the clicking and selecting the option and then waiting a second for the map to load. But I am not going to argue with people who fail to see that either way (maps or source code) the thread helped people who didn't know at all about how to get the postcode from AW.
Knowing the first half of the postcode in London can be very useful even in a large area. That is because when a walking distance (e.g 2mins) from a station is given (in a review or in a profile) you can to do a circle with that radius and see where it intersects the postcode area borders. If it does the area may reduce to a circular sector. For example EC1M
. If the reviewer says 2 mins from Barbican then given the location of the station at the edge of the postcode area and the roads the options are limited to 3 points. Another thing is in the options you can choose “Find accommodation near <girl X>”. If you know the girl is working from a hotel you can limit your options even further.