P.S. DO NOT BUY any of these books. They are all available from your medical school's library. The only books I have purchased this year are not on the recommended reading list, because these books are so widely available.
P.P.S Textbooks are not essential for the first year at Barts. You hear stories of fellow students not visiting the library till third year. Yet, if you want relatively good grades, I'd heavily imply that you need to support your learning. As a graduate, I am so use to turning to several sources, not just lecture notes, that it is hard to break the habit.
P.P.P.S. But if you are reading this list, it means you have already opened you mind to the use of textbooks so ignore above.