From the event page at the Foyles site:
Twisted, gritty, spiked with mordant wit, Gun Machine is the latest bullet from the brain of Warren Ellis. It’s the kind of dark detective thriller you won’t have read before, but exactly what you’d expect from the award-winning creator of Transmetropolitan, Planetary and Red. Come and hear more from Ellis at Foyles in conversation with journalist and author Sam Leith.
Click through to buy tickets: a fiver, or three quid concession. (I don’t charge or set prices, so don’t even think about complaining to me about it.) Starts at 630pm. By 730pm, the strain of having had to be coherent on stage for an hour will probably have killed me. Come to see that!