I read a lot when I was younger, but find little time for it these days, as I'm sure most of my colleagues will agree!
Of the classics, I particularly like Dickens and Hardy, but I lean more towards old school science fiction, I think I've read almost every book by John Wyndham. Huge fan of dystopian novels like 1984, Brave New World, When the Sleeper Wakes etc. etc. Other writers I enjoy are: Lovecraft, Gabriel Garcia Marquez, Tolkien, Ian Banks, Carl Hiaasen, Christopher Brookmyre, Alessandro Baricco and Milan Kundera.