Blood on the Motorway: An Apocalyptic British Thriller Trilogy by Paul Stephenson - Kindle Edition

From Book 1:

Tom is a layabout ex-student waiting for his life to start or the power to get cut off, whichever comes first. Jen works two jobs, hates both, and most days is too hungover to deal with either. Detective Burnett is trying to work out who the hell turned his sleepy Yorkshire village into a murder town.

When the skies fill with a mysterious storm, each of them wakes to find streets filled with dead. The world they knew has gone, and their old lives with it.

Tom finds himself at the mercy of a deranged soldier, Jen has to flee the fires burning her city to the ground, and Burnett must track down a killer who sees the apocalypse as an opportunity for more mayhem. If they can’t band together, the fate of what remains of humanity hangs in the balance.