My guess is that it just uses the first part of the postcode to give the location rather than using all of it.
Correct. It does not take the full postcode just the first few digits. As in SW1 or NG1. It does not allow full postcode
As for not replying to your email it could be because it was not polite or sounded as if you wanted sex chat or it may have looked like a copy and paste job (normally emails over three or four lines).
Try again and ask her why she is ignoring you? If no reply then report her as fake.
Too many people report a profile as fake when infact they just did not respond to an email for one of the reasons above.
I never answer the war and peace type email as for first contact as I do not need a full sex scenarion written down for me and they are normally sent to every prossie in the area anyway. I also do not answer emails like 'when are you free' as this is on my profile already and it would take forever to write down every hour of every day that I am free. Also the 'you have huge tits I wanna suck on them' type emails never get answered either
If the email was a simple. Hi (insert name here). I saw your profile and am intersted in meeting. Are you available on Monday for an hour at 3 or 4 or 5 or if not perhaps those times on Tuesday. Thanks (name here). Then I would answer it as it is brief, to the point and not wank material.
If you sent something along those lines then she should answer