James Swallow is an
African Swallow author. He's written a whole bunch of tie-in novels for a whole bunch of different franchises, but most of us know him for his Warhammer 40,000 (and, in particular, Blood Angels) novels. His Horus Heresy book Fear to Tread ranks as Black Library's most financially successful book.
A lot of people hate him for some reason, which is odd, because he isn't exactly C.S. Goto, or, hell, Matt Ward. Sure, he occasionally has some pretty big jumps of logic and takes some liberties with the fluff, but he hasn't made back-flipping Terminators. This might have something to do with him crediting Ward as a major help in writing Hammer and Anvil. Then again he did write the good Sisters of Battle books...
He isn't... uh... I dunno. I think we covered all the other Black Library authors. So, he most definitely isn't Philip K. Dick, Robert Heinlein, Isaac Asimov, Arthur C. Clarke, or Frank Herbert, although he (and most of Games Workshop, really) probably took inspiration from all of the above.
And yes, in fact he does indeed swallow.