One of the joys of writing novels over writing for the screen is that your budget is infinite and your imagination is unfettered. You don’t have to worry about the cost of the number of suns your planet orbits around, nor about the practical effort required to have half a dozen alien races, none of whom conform to a basic upright and bipedal morphology, appear repeatedly and interact with your human characters.

In Down Station, when I blew up London – which in and of itself is a somewhat technical task, involving setting fire to the Underground and melting the streets around Mayfair – I needed somewhere for my survivors to run to. That somewhere was Down, which has more in common with Tarkovsky’s Solaris and Julian May’s Pliocene Earth than it does C.S. Lewis’ Narnia. I wanted Down to be both eerily familiar and surprisingly different: you can, of course, read the Books of Down and not worry about what happens under the bonnet, but as the author, that’s exactly what I had to do – open it up and tinker with the engine until I was happy with how it all worked. Continue reading →