As of today, Tor UK, Pan Macmillan’s science fiction and fantasy imprint, has made its ebooks DRM-free and available to purchase from the Tor UK Ebookstore. In a move announced earlier this year, Tor UK has joined sister company Tor Books in New York in removing Digital Rights Management from all its titles so that once you purchase a Tor UK book, you can download it as many times as you like, on as many ereaders as you like.
[The publisher, China Miéville, Doctorow, and more on the change]