The premise of Collision (as well as its title) is unmistakably similar to that of Paul Haggis's movie Crash, in which a road accident provides the linking point for a cluster of disparate personal stories. However, instead of the boulevards of Los Angeles, Collision exploits the less often remarked upon mystique of the A12, which links east London to Great Yarmouth. In 2007, the A12 was adjudged "Britain's worst road" in a survey by Cornhill lnsurance, so Collision's creator and writer Anthony Horowitz has picked an appropriate location for his fateful multi-vehicle pile-up.