Spidey, Black Library publish Warhammer novels, and Dan Abnett has written a few I have a couple of his, Gilead's Blood
Bloodstorm: A tale of Malus Darkblade they were Ok but not great and also written in conjuction with another author, but that was 10years ago when he was just starting out.
He willnae tak' a drink! I think he's deid! , on the other hand though A Midgie in yir hand is worth twa up yir kilt.