Unfortunately for his fame, he's been pigeon-holed as a SF writer. One of his earlier books is one of the two I'd most like to make into a film or TV mini-series, and it's amazing that no-one else has done so.
Anyway, this one involves, in part, an alternative history of World War Two. The previous owner didn't quite get this - when the book mentions the war ending in May 1941, as far as the British are concerned anyway, there's a pencilled note: "Wasn't it 1945?"
(I note with more of today's amusement that you can pre-order "Untitled Priest 2 of 2" by Christopher Priest" in hardcover from Amazon, not least as there's no sign of '1 of 2'! Publication date... June 1, 2005)