Boxer, Beetle by Ned Beauman
I saw Ned Beauman on a TV show talking about this book, and was intrigued enough to read it, and I was glad I did. The book seems very complex, with two different stories, taking place in different time periods, both of which are connected; in the present, the narrator gets involved in locating Seth "Sinner" Roach, who was a Jewish boxer in the 1930s, and is forced to do the bidding of a mysterious Welsh stranger. The whole story seems very quirky and offbeat at times, kind of like a Robert Rankin story (he wrote stuff like "Raiders of the Lost Car Park, and The Fandom of the Operator, which seem that if they ever were recreated for the screen, only Doctor Who writer Steven Moffat could do them justice!)
The flashbacks involve Sinner and a Nazi sympathiser called Erskine, who wants to study Sinner, and has an interest in some sort of new "Hitler Beetle"; the story seems confusing at first, but in the end it starts to make sense, and the writing is very compelling, though be warned, it gets very adult in places (at one point a character gives another guy oral sex just for the purpose of torturing him).
The whole story is written very intelligently, and Ned Beauman comes across as well-educated, although some of parts of the book seem long-winded and overly wordy. I loved the fact that he actually name-checked himself by having the central character receive e-mails from "nbeauman". Overall, if you're interested in deep political stuff, but aren't put off by the Nazi references or sexual content, this is for you.