KUMALA

Please use the internet-based book store for any bargain textbooks, now I have some which I used most during my times of studies.
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" y1 N& z. c5 t% X: E& vOne is as-you-mentioned "Second Hand Book Store", please use the link: http://www.abebooks.co.uk (This one really rocks, and I believe it should meets most of your demands. )1 u1 \! U) j* J' R. L

$ [4 [, h( {+ l& o. h2 ^The other one - Amazon, however. It's not always cheaper than Abebooks, but you will find an even wider range of the book selections: http://www.amazon.co.uk
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% H% W. }; F3 s9 o9 U1 i5 gThe third one, which I used not that often, as this one actually has the real book stores all around the UK, named Waterstone's: http://www.waterstones.com
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Besides, for a postgraduate student, you may not have to purchase every book listed on your reading list, it's just simply because you need to read at least 4 or 5 books for a single course per average. Therefore borrowing from the university library as fast as you can would be even better, yet absolutely cheaper.
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( h" o5 E/ i) |# bSo you don't actually need to walk that far for seeking Bargain shops, everything can be done online. 5 W9 ~- |/ S0 L. d) I
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Best regards