I was wondering if anyone could recommend any reputable book shops in the UK, where one could order books of a technical nature.
It sounds like you are not adapting to a little something called the Internet. With online shopping being one of the reasons storefront bookshops are closing.
Here's a few links for buying physical books online:
Online book stores
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http://www.bookfinder.com/ Try first. It includes Abebooks in the search. Lists both new and used.
http://abebooks.com Worldwide 2nd hand book dealer co-op.
http://www.biblioquest.com.au/ Global Out Of Print Book Search Service.
http://www.worldcat.org/ Find a book in libraries. With 'nearest to you' feature.
http://www.bookdepository.com/ UK. Free worldwide shipping.
http://www.bookdepository.com/free Dodo Press (part of bookdepository) has re-published over fifteen thousand out of print or difficult to find titles. By doing this we have made thousands of titles available to readers that were previously impossible to get hold of. Dodo Press titles are also available from the site as free downloads.
http://www.usedbooksearch.co.uk/books.htm Search cheapest book world wide
http://www.addall.com/ Book Search and Price Comparison
http://amazon.com Once was books, now... F'd if I know.
http://www.bn.com Barnes & Noble. Ditto.
http://www.powells.com Ditto.
http://www2.xlibris.com Publish your own book
http://www.booksurge.com Self-publishing
http://galaxybooks.com.au/ Oz SciFi bookshop
http://www.slowglass.com.au/ Ditto. Melbourne, mailorder.
http://www.booksandcollectibles.com.au/http://www.lindsaybks.com/ books, new and old, for experimenters, inventors,
tinkerers, mad scientists, and a very few normal people. (Dammit. Retired.)
http://www.ala.org/ American Library Association
http://www.octavo.com/ Octavo Digital Rare Books. Not have as many online example pages as they used to.
http://www.ipl.org/ The Internet Public Library
http://www.johnnealbooks.com/ John Neal Booksellers - Supplies for bookbinders and paper craft
Online Books, etexts
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http://hackershelf.com/browse/ Programming ebooks, free
http://www.1911encyclopedia.org/Main_Pagehttp://www.gutenberg.org/ Free ebooks.
http://www.ku.edu/carrie/http://www.bookdepository.com/free Dodo Press ebooks - free
http://www.bibliotecapleyades.net/http://www.truthofthematter.org/Lindbergh/default.asp Suppressed books
http://en.wikisource.org/wiki/Main_Pagehttp://lib.virginia.edu/digital/collections/finding_digital.htmlhttp://www.docquan.com/lib_dead.html from HB. WOW!
http://www.hermetics.org/ebooks.htmlhttp://www.ebookee.comhttp://www.btebook.comhttp://www.sacred-texts.com/index.htm Huge. Incl sections of Talmud.
http://www.scribd.com/ 'publish yourself' (but... for some, requires some plugin)
http://www.anonib.com/bookchan/index.php?b=1 BOOKCHAN ! ImageRARarchives Gone.
http://www.anonib.com/bookchan/Also, lithursday threads on 4chan.org (mostly on Thursdays, but sometimes other days too. 200800130-blocked now)
http://www.pmillett.com/tecnical_books_online.htm mostly about radio valves
Banned sites, books, forbidden knowledge
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http://www.jrbooksonline.com/ JR's Rare Books & Commentary
http://www.americandeception.com rare, suppressed books
http://www.smuggled.com/ links and lists of banned sites.
http://www.ala.org/ala/oif/bannedbooksweek/bannedbooksweek.htmhttp://wikileaks.org/http://wikispooks.com/wiki/Main_Page