The Amazon UK site - probably the most well-known online book seller. Expect excellent customer service, a large selection of books in stock and speedy delivery.

Click here if you are looking for text books

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If you are looking for Amazon Customer Services, the phone number is: 020 8636 9200.

Waterstone's, the leading specialist high street book retailer, has launched its own online retail website offering a wealth of books and book knowledge and access to expert booksellers from Waterstone's stores around the country.
Now also selling DVDs.

Zavvi is back and now selling a broader range of products including computing, perfume, lingerie, sports and fitness.

Alibris connects you to thousands of independent book, music, and movie sellers around the world. With over 60 million used, new, rare, and out-of-print titles, they have what you're looking for!