Hi Roe,
You have gotten excellent advice from our MM friends with
www.Amazon.com , particularly
www.Amazon.co.uk , since they have by far the best selection.You may also want to look at
Barnes & Noble.com , and
www.Borders.com . My favorite is a remainder house called
Daedalus . Be prepared to pay shipping.
You may want to try
Blackwells Bookshop in the U.K. shipping might not be as expensive as from the U.S.
Also, if you are looking for Out-Of-Print books, the best place is
AbeBooks , another good one is
Bookfinder Website However, if you go on the net, you can buy directly from most publishers, if you know of a specific title, like Penguin they can sell it to you outright. I buy a lot of English books and audio-books from Britain using Amazon and have been very satisfied with their service.
Good Luck
Booklady